Glossary

Maritime glossary, terms beginning with Z (page 2)

All maritime glossary terms that begin with the letter Z, drawn from every subject section. 521 entries.

Showing 250 of 521 terms (page 2 of 3).

Zhenjiang Shipyard X137. Harbour Tugs, Towage Operators and Tug Builders: Chinese yard delivering harbour tugs for domestic ports.
Zhik 470 World Tour F4. Recreational Boating, Yachting and Sport: Generic example of class tour.
Zhik Pacific Series F4. Recreational Boating, Yachting and Sport: Recreational regatta series.
Zhik Sailing Gear F4. Recreational Boating, Yachting and Sport: Australian sailing apparel manufacturer.
Zhik Trapeze Harness F4. Recreational Boating, Yachting and Sport: Sailing equipment example.
Zhonghai Youfu X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: COSL subsidiary brand operating in offshore drilling services.
Zhonghua Shipbuilding X29. Ship Sale and Purchase, Management Contracts and Valuation: Shanghai yard merged into Hudong-Zhonghua under CSSC.
Zhongshan Station X133. Polar Research Vessels and Polar Code Regimes: Chinese year-round Antarctic station in Larsemann Hills, opened 1989.
Zhongtian AIS X74. AIS Data, Vessel Tracking and Maritime Intelligence: Chinese supplier of AIS shipborne equipment certified to CCS standards.
Zhoushan X58. Shipbuilding Yards and Construction: Chinese port and shipbuilding cluster in Zhejiang province, host to repair and newbuild yards.
Zhoushan Bonded Bunker Free Trade Zone X72. Bunkering Hubs and Bunker Suppliers: Customs framework introduced in 2016 enabling bonded bunker supply to international vessels at Zhoushan and adjacent Chinese ports.
Zhoushan Bunker Index X72. Bunkering Hubs and Bunker Suppliers: Bunker price benchmark published by Sinopec and Shanghai Petroleum Exchange for the Port of Zhoushan.
Zhoushan Bunker Service X72. Bunkering Hubs and Bunker Suppliers: Bunker supply at the Port of Zhoushan, China's largest bunker port since 2020, supplied by Sinopec Zhoushan, Chimbusco, and CNOOC Bunker under the Zhoushan Bonded Bunker Free Trade Zone framework.
Zhoushan COSCO X113. Drydock and Ship Repair Yards: COSCO Shipping Heavy Industry's Zhoushan ship repair complex in Zhejiang, China, one of the world's busiest repair yards.
Zhoushan FTZ X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: China (Zhejiang) Pilot Free Trade Zone established 1 April 2017 enabling bonded bunker oil supply.
Zhoushan International Maritime Conference X119. Maritime Conferences, Trade Shows and Awards: Annual conference held in Zhoushan, China since 2018.
Zhoushan LNG Bunker X72. Bunkering Hubs and Bunker Suppliers: LNG bunker supply at the Port of Zhoushan by Sinopec LNG and CNOOC Gas.
Zhoushan Marine Equipment Expo X119. Maritime Conferences, Trade Shows and Awards: Annual Chinese marine equipment exhibition launched 2014.
Zhoushan Maritime Cluster F3. Seafaring Life, Education, Professions and Institutions: Chinese major bunkering and ship repair hub.
Zhoushan Port X138. Global Container Terminal Operators and Port Equipment: Merged with Ningbo as Ningbo-Zhoushan Port in 2015 forming the world's busiest port by cargo tonnage.
Zhoushan recycling cluster X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: A Chinese yard concentration in Zhejiang Province, historically active in domestic flag recycling.
Zhoushan Refinery Vetting X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The terminal vetting overlay applied to tankers calling Zhejiang Petrochemical's Zhoushan complex.
Zhuhai X130. National Coast Guards and Cutter Fleets: China Coast Guard South Sea regional command headquarters in Guangdong.
Zhuhai Maritime Safety Administration Simulator X144. Bridge Simulators, Engine Room Simulators, and Maritime Training Equipment: VTS training simulator for the Pearl River Delta.
Zhuk-class X77. Naval Mine Warfare and Mine Countermeasures: A Soviet patrol craft family referenced in mine warfare auxiliary roles.
Zigzag Maneuver F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Course alteration tactic historically used against submarines.
Zigzag maneuver (10/10, 20/20) B1. Naval Architecture: Standard IMO test of course-keeping ability.
Zika virus X36. Shipboard Medical, Telemedicine and Seafarer Health: Mosquito-borne illness with travel-health implications for crews and pregnant partners ashore.
ZIM Agency X86. Port Agency, Husbandry and Disbursement: ZIM Integrated Shipping Services agency network at calling ports.
ZIM eFleet X70. Reefer Containers and Cold Chain Shipping: ZIM Integrated Shipping Services platform offering customers visibility of reefer container conditions in transit.
Zim Maritime Academy F3. Seafaring Life, Education, Professions and Institutions: Israeli liner-operator training arm.
ZIM Reefer X136. Reefer Vessels and Cool Chain Operators: Israeli carrier ZIM Integrated Shipping Services reefer container business with around 70,000 reefer TEU, expanded post 2021.
Zinc X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Element in some lube oils from ZDDP additive; absence indicates an ashless or low-ash formulation.
Zinc (Zn) X149. Marine Fuels, Bunkering, and Alternative Fuels: A trace metal of concern in residual fuel; ISO 8217 limits Zn to 15 mg/kg to control engine wear.
Zinc Ammonium Nitrite X75. IMDG Code, Classes, Packing and Segregation: UN 1512, Class 5.1 oxidizer Packing Group II.
Zinc Anode F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Sacrificial anode for cathodic protection.
Zinc anode (propeller/shaft) X38. Propellers, Stern Gear and Shaft Lines: Sacrificial anode mounted on the rudder, shaft, or hull to protect the propeller and shaft from galvanic corrosion.
Zinc anode (sacrificial) B1. Naval Architecture: Galvanic anode noted in NA weight estimate.
Zinc Anode (Tank) X41. Cruise Ship Public Health and VSP/USPH: Sacrificial anode in some potable tank arrangements that must be compatible with potable contact.
Zinc anode block B2. Marine Engineering: Cathodic protection consumable for hull and tank.
Zinc Anode Bracelet X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Sacrificial anode clamped around subsea pipelines for cathodic protection.
Zinc Anode Inspection X5. Marine Surveying and Inspection: Visual and weight assessment of sacrificial zinc anodes.
Zinc Anode Recovery X28. Ship Recycling and End-of-Life: Removal and disposal or reuse of sacrificial zinc anodes.
Zinc Anode Replacement F4. Recreational Boating, Yachting and Sport: Routine recreational yacht maintenance.
Zinc Anode Survey X141. Marine Salvage Industry and Wreck Removal Contractors: Diver inspection of cathodic protection on a long-grounded wreck.
Zinc anodes (sacrificial) X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: Removed during dismantling and recovered as a non-ferrous metal stream, recorded in IHM Part I as non-hazardous metal where applicable.
Zinc Bromate X75. IMDG Code, Classes, Packing and Segregation: UN 2469, Class 5.1 oxidizer Packing Group III.
Zinc Chlorate X75. IMDG Code, Classes, Packing and Segregation: UN 1513, Class 5.1 oxidizer Packing Group II.
Zinc chromate primer X45. Marine Paints, Coatings and Antifouling: Historic anticorrosive primer largely phased out due to chromate toxicity.
Zinc Coating X9. Cargo Securing, Lashing and Stability Vocabulary: Corrosion protection for chains and fittings.
Zinc Concentrate X1. Cargo Science, Commodities and Cargo Care: Group A IMSBC fine heavy ore; TML controlled.
Zinc content X61. Marine Lubricants and Cylinder Oils: Concentration of zinc in a lubricant, mainly indicative of ZDDP treat rate, measured by ICP-OES.
Zinc Cyanide X75. IMDG Code, Classes, Packing and Segregation: UN 1713, Class 6.1 toxic solid Packing Group I.
Zinc dust paint (propeller temporary) X38. Propellers, Stern Gear and Shaft Lines: Temporary surface coating applied during dry-dock to bronze propellers to mark erosion patterns (paint test).
Zinc ethyl silicate X45. Marine Paints, Coatings and Antifouling: Inorganic zinc-rich primer providing galvanic protection of steel at coating defects.
Zinc Hydrosulfite X75. IMDG Code, Classes, Packing and Segregation: UN 1929, Class 4.2 substance liable to spontaneous combustion Packing Group III.
Zinc Ingots / Slabs X1. Cargo Science, Commodities and Cargo Care: Heavy non-ferrous breakbulk.
Zinc Nitrate X75. IMDG Code, Classes, Packing and Segregation: UN 1514, Class 5.1 oxidizer Packing Group II.
Zinc Oxide X1. Cargo Science, Commodities and Cargo Care: Fine powder cargo; bagged or bulk.
Zinc Permanganate X75. IMDG Code, Classes, Packing and Segregation: UN 1515, Class 5.1 oxidizer Packing Group II.
Zinc phosphate primer X45. Marine Paints, Coatings and Antifouling: Anticorrosive primer using zinc phosphate as the active pigment.
Zinc Phosphide X75. IMDG Code, Classes, Packing and Segregation: UN 1714, Class 4.3 with Class 6.1 subsidiary risk Packing Group I.
Zinc Plate Antifouling F1. Maritime History: Early ironclad-era hull protection method.
Zinc Powder X75. IMDG Code, Classes, Packing and Segregation: UN 1436, Class 4.3 or Class 4.2 depending on form and treatment.
Zinc pyrithione X18. Ballast Water, Biofouling and Antifouling: Booster biocide used in antifouling paints in combination with copper.
Zinc Reference Electrode X100. Marine Cathodic Protection and Anodes: A zinc half-cell used as a robust shipboard reference electrode in some marine CP installations.
Zinc Resinate X75. IMDG Code, Classes, Packing and Segregation: UN 2714, Class 4.1 flammable solid Packing Group III.
Zinc rich primer organic X165. Marine Coatings, Antifouling, and Hull Husbandry: Epoxy or polyurethane binder loaded with metallic zinc dust providing galvanic protection.
Zinc silicate X45. Marine Paints, Coatings and Antifouling: Inorganic zinc-rich primer based on ethyl silicate or alkali silicate binder.
Zinc Silicate Coating X93. IBC Code and Chemical Tanker Operations: Inorganic zinc-rich cargo tank lining used for compatibility with vegetable oils and selected mineral cargoes.
Zinc silicate inorganic X165. Marine Coatings, Antifouling, and Hull Husbandry: Ethyl-silicate-bound primer loaded with zinc dust offering long-term cathodic protection in atmospheric and immersed service.
Zinc Silicate Primer X113. Drydock and Ship Repair Yards: Inorganic shop primer applied to blasted steel as the first layer of high-performance tank or hull coatings.
Zinc Silicate Tank Coating Inventory X50. Ship Recycling, Demolition and Hong Kong Convention: The IHM Part I record of zinc silicate cargo tank coatings, common in chemical and product tankers.
Zinc Wear X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: Lube oil element typically originating from ZDDP anti-wear additive depletion, monitored to confirm additive package integrity.
Zinc-Coated Steel Armor X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Submarine cable armor wire treated with zinc to extend corrosion resistance.
Zinc-epoxy primer X45. Marine Paints, Coatings and Antifouling: Two-pack epoxy primer pigmented with zinc dust providing cathodic protection at coating defects.
Zinc-Rich Epoxy X88. Marine Surface Preparation and Coatings Application: Anticorrosive primer with zinc dust loading typically 80 percent or more by weight in the dry film bound by epoxy resin providing galvanic protection to steel.
Zinc-rich primer B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Anti-corrosion primer for steel.
Zineb X165. Marine Coatings, Antifouling, and Hull Husbandry: Dithiocarbamate fungicide used as an antifouling booster against algal species resistant to copper alone.
Zinnia, The [1984] 2 Lloyd's Rep 211 X143. Landmark Maritime Law Cases and Doctrines: English Commercial Court on charterparty applicable law and forum.
Zipwake X132. High-Speed Craft, Hydrofoils and Ferry Operators: Swedish supplier of dynamic interceptor systems used on planing HSCs up to 30 m.
Zirconium Dry Finished Sheets Strip or Coiled Wire X75. IMDG Code, Classes, Packing and Segregation: UN 2009, Class 4.2 substance liable to spontaneous combustion Packing Group III.
Zirconium Hydride X75. IMDG Code, Classes, Packing and Segregation: UN 1437, Class 4.1 flammable solid Packing Group II.
Zirconium Nitrate X75. IMDG Code, Classes, Packing and Segregation: UN 2728, Class 5.1 oxidizer Packing Group III.
Zirconium Picramate Wetted X75. IMDG Code, Classes, Packing and Segregation: UN 1517 with not less than 20 percent water, Class 4.1 flammable solid Packing Group I.
Zirconium Powder Dry X75. IMDG Code, Classes, Packing and Segregation: UN 2008, Class 4.2 substance liable to spontaneous combustion Packing Group I, II or III.
Zirconium Powder Wetted X75. IMDG Code, Classes, Packing and Segregation: UN 1358 with not less than 25 percent water, Class 4.1 flammable solid Packing Group II.
Zirconium Scrap X75. IMDG Code, Classes, Packing and Segregation: UN 1932, Class 4.2 substance liable to spontaneous combustion Packing Group III.
Zirconium Suspended in a Flammable Liquid X75. IMDG Code, Classes, Packing and Segregation: UN 1308, Class 3 flammable liquid Packing Group I, II or III.
Zirconium Tetrachloride X75. IMDG Code, Classes, Packing and Segregation: UN 2503, Class 8 corrosive solid Packing Group III.
Ziri Subedar Shipbreaking X118. Ship Recycling Yards, Beaches and Regulation: Sitakunda, Chittagong, ship recycling facility recorded in NGO Shipbreaking Platform plot lists.
ZJ Boom X126. Marine Oil Spill Response and OPRC Regimes: Yangtze-region permanent boom installation standard.
Zoarcid X10. Marine Biology, Fisheries and Oceanography: Eelpout fish of the family Zoarcidae, common in cold and deep waters.
Zodiac (1924) X128. Sail Training Ships and Tall Ship Associations: American two masted gaff topsail schooner built 1924 at East Boothbay Maine, 49 m sparred length, US National Register of Historic Places, operates sail training in the Pacific Northwest.
Zodiac Driver X97. Polar Expedition Cruise and IAATO Operations: Expedition team member trained and certified to operate Zodiacs for landings, cruising, and wildlife viewing.
Zodiac Maritime X135. Chemical Tanker Operators and IBC Code Cargoes: London-based Ofer family shipping group with chemical and product tonnage active in global parcel trades.
Zodiac Milpro X97. Polar Expedition Cruise and IAATO Operations: French manufacturer of professional-grade inflatable and rigid inflatable boats including the Zodiac MK V used on expedition ships.
Zodiac MK V Heavy Duty X97. Polar Expedition Cruise and IAATO Operations: Heavy-duty model of Zodiac inflatable boat from Zodiac Milpro widely used as the standard polar expedition landing craft.
Zodiac Operation X164. Cruise Industry, Brands, Ship Classes, and Terminals: The use of rigid hulled inflatable boats for expedition cruise landings on remote shores, regulated by AECO and IAATO operational guidelines.
Zoea X10. Marine Biology, Fisheries and Oceanography: Planktonic larval stage of many decapod crustaceans.
Zoeller Edelstahl pump B2. Marine Engineering: Stainless steel pump used in ER bilge service.
Zonal Approach X8. IACS, Class Rules and Class Notations: corrosion margin methodology used in CSR-H assigning net scantlings to defined ship zones.
Zonal Attachment D4. Fisheries, aquaculture, blue economy and marine resources: Share of a stock occurring in a country's zone, used in allocation.
Zonal exclusion (marine) X57. Ocean Energy Beyond Wind: Spatial constraint that prohibits specific activities within defined marine zones for safety or environmental reasons.
Zonal feeder service X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: A short sea feeder pattern aggregating cargo from multiple shippers to and from a hub port within a defined geographic zone.
Zonal flow X10. Marine Biology, Fisheries and Oceanography: Flow oriented east-west.
Zonal Inspection Plan, Yard X50. Ship Recycling, Demolition and Hong Kong Convention: The yard procedure for dividing the facility into inspection zones for routine audits.
Zonal Isolation Packers X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Subsurface completion equipment used to isolate producing intervals in subsea wells fed to floating units.
Zonal Maritime Operations Centre X22. Piracy, Maritime Security and Armed Protection: Sub-regional facility under the Yaounde Architecture coordinating Gulf of Guinea security operations.
Zonal Mesh X54. Naval Architecture Software and IACS Rules: Mesh strategy partitioning the CFD domain into structured and unstructured zones.
Zonal Pilotage Group F3. Seafaring Life, Education, Professions and Institutions: Regional pilot association.
Zonal pricing X42. Offshore Wind Installation and Cable Lay: Proposed UK electricity market reform model relevant to offshore wind locational signals.
Zonal protection X165. Marine Coatings, Antifouling, and Hull Husbandry: PSPC concept assigning different coating systems to ballast tanks, void spaces, and cargo holds based on service.
Zonal Wave Pattern D5. Coastal processes, sea-level, cryosphere and ocean observation science: East-west pattern in atmospheric or oceanic fields.
Zonal Welfare Committee, ISWAN F3. Seafaring Life, Education, Professions and Institutions: Regional ISWAN governance body.
Zonal Wind D1. Physical and chemical oceanography and marine meteorology: East-west component of wind velocity.
Zonation (Reef) D3. Marine environmental science, pollution and conservation: Distinct biological zones across reef profile.
Zonda-Class Tug X137. Harbour Tugs, Towage Operators and Tug Builders: Sanmar series name for one of its RAmparts variants.
Zone X6. Container, Intermodal and Trade Codes: Customs zone, freight rating zone, or environmental compliance zone.
Zone (fire control) X170. SOLAS 1974 Convention: Chapter-by-Chapter Glossary: SOLAS II-2/9.2 main vertical zones not exceeding 40 m in length, separated by A-60 divisions.
Zone (operational, POLARIS) X27. Polar Code, Ice Navigation and Polar Operations: Specific ice zone for which RIO is calculated; PWOM defines decision points.
Zone (security level) X170. SOLAS 1974 Convention: Chapter-by-Chapter Glossary: ISPS Code Part A levels 1 (normal), 2 (heightened), and 3 (exceptional), communicated by Administration under SOLAS XI-2/3.
Zone 0 Hazardous Area Verification X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The SIRE 2.0 verification that Zone 0 boundary integrity, including penetrations and seals, is maintained.
Zone 0/1/2 (IEC 60079) X20. LNG Operations and Custody Transfer: Hazardous area classification used in IGC chapter 10 cargo zones for electrical equipment selection.
Zone 1 X31. Helicopter Operations on Ships: Hazardous area classification around fuel handling on helideck.
Zone 1 Inland X33. Inland Navigation and Barge Operations: ES-TRIN navigation zone covering estuarial and coastal waters with the most stringent requirements.
Zone 1/Zone 2 X14. Offshore Oil and Gas Marine Operations: Hazardous area classifications under IEC 60079 for offshore.
Zone 2 X31. Helicopter Operations on Ships: Secondary hazardous area classification adjacent to Zone 1 around refueling operations.
Zone 2 Inland X33. Inland Navigation and Barge Operations: ES-TRIN navigation zone covering large lakes and lower reaches of major rivers.
Zone 3 Inland X33. Inland Navigation and Barge Operations: ES-TRIN navigation zone covering main inland waterway corridors.
Zone 4 Inland X33. Inland Navigation and Barge Operations: ES-TRIN navigation zone covering smaller inland waterways with the least demanding requirements.
Zone A Vibration X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: ISO 10816 classification for newly commissioned machinery with acceptable vibration severity.
Zone and Conduit Diagram X48. Maritime Cybersecurity: Representation of security zones and the conduits between them in a shipboard or shore environment.
Zone and Conduit Model X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents: The IEC 62443 segmentation construct adopted as the reference architecture in IACS UR E26.
Zone Attachment Principle X87. Fishing Vessels and Fisheries Management: Principle in some coastal state agreements assigning a share of a shared stock based on its presence within the EEZ.
Zone B Vibration X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: ISO 10816 classification for machinery suitable for unrestricted long-term operation.
Zone Beam X68. Maritime Satcom and Telecommunications: Satellite beam shaped to cover a defined operational zone rather than a complete hemisphere.
Zone C Vibration X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: ISO 10816 classification for machinery acceptable for limited operation only until corrective action.
Zone Captain, Stella Maris F3. Seafaring Life, Education, Professions and Institutions: Catholic seafarer-welfare coordinator.
Zone Charter X161. Shipbroking, Freight Derivatives, and Baltic Indices: Charter party variant under which a vessel trades within a defined geographic zone for a period, hedged using regional Baltic routes.
Zone classification C2. Ship operations, crewing and technical management: Hazardous zone classification on gas and oil tankers.
Zone Cleanliness Survey X155. Marine Surveying Practice and Cargo Inspection: A subdivided hold cleanliness inspection in which separate zones are graded independently when only part of the hold will be loaded.
Zone Coordinator X80. Maritime Search and Rescue Coordination: Coordinator within an MRCC responsible for one geographic zone.
Zone Cover X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: War risk cover defined by JWC listed areas, with additional premium for transit.
Zone Current X100. Marine Cathodic Protection and Anodes: The protective current delivered by one anode bank or one rectifier zone of an ICCP system.
Zone D X22. Piracy, Maritime Security and Armed Protection: Yaounde Architecture maritime zone covering Nigerian and Beninese waters under CRESMAO oversight.
Zone D Vibration X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: ISO 10816 classification for vibration severity sufficient to cause machinery damage requiring immediate corrective action.
Zone Date System X133. Polar Research Vessels and Polar Code Regimes: Transport Canada legacy ice-shipping framework now overlaid by AIRSS.
Zone Defense Booming X60. Marine Salvage and Wreck Removal: Tiered booming strategy protecting sensitive shorelines with successive containment lines.
Zone Defense Plan X126. Marine Oil Spill Response and OPRC Regimes: USCG Captain of the Port plan listing OSROs, response equipment caches, and priority protection sites.
Zone Definition X44. Shipping Indices, FFAs and Freight Markets: Specification of geographical ranges within Baltic route descriptions that determines acceptable load and discharge ports.
Zone description B3. Nautical Science: Integer hours offset from UTC at sea.
Zone description (ZD) X16. Nautical Science, Navigation and COLREGs: Whole number of hours to be added or subtracted from zone time to obtain UTC.
Zone Differential X44. Shipping Indices, FFAs and Freight Markets: Worldscale adjustment factor reflecting additional voyage costs when a tanker calls at multiple ports within a route definition.
Zone E X22. Piracy, Maritime Security and Armed Protection: Yaounde Architecture maritime zone covering Cameroonian and Equatoguinean waters under CRESMAC oversight.
Zone F X22. Piracy, Maritime Security and Armed Protection: Yaounde Architecture maritime zone covering Gabon, Sao Tome and Principe, and Congo waters.
Zone fire integrity X24. Cruise, Passenger Ship and Ferry Operations: SOLAS II-2 standard of A-class divisions bounding main vertical zones.
Zone G X22. Piracy, Maritime Security and Armed Protection: Yaounde Architecture maritime zone covering Angola and Democratic Republic of Congo waters.
Zone H X127. Maritime Security, Anti-Piracy and PMSCs: Reserved Yaounde extension zone.
Zone Heating Galley X120. Marine Catering, Provisions and Ship Chandlers: HVAC zone separation requirement under SOLAS II-2 to limit smoke spread from galley to accommodation.
Zone Limits X4. Marine Insurance, P&I and Claims: trading limits set out in hull trading warranties, often defined by reference to International Navigating Conditions.
Zone Loading X9. Cargo Securing, Lashing and Stability Vocabulary: Load Line Convention assignment of seasonal zones for permissible drafts.
Zone Loading Vessel X104. Project Cargo Forwarders and Heavy Transport: Subdivision of vessel deck into zones with declared allowable point and uniform loads.
Zone Management Plan (ZMP) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Coastal zone planning instrument that constrains cable and pipeline routing in sensitive areas.
Zone of action X77. Naval Mine Warfare and Mine Countermeasures: The doctrinal water-space assigned to an MCM unit during clearance operations.
Zone of Aeration D2. Hydrography, tides, waves, bathymetry and marine geology: Sediment layer above the water table, relevant to coastal hydrogeology.
Zone of Application (PSSA) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The geographic extent within which Associated Protective Measures, such as Areas to be Avoided or mandatory routeing, apply once a Particularly Sensitive Sea Area is designated by IMO.
Zone of Application Clause X51. Maritime Arbitration, Law and BIMCO Clauses: A charterparty or insurance provision identifying the geographical area within which agreed terms apply.
Zone of arbitration X152. Maritime Arbitration and Dispute Resolution: Informal label for the scope of disputes covered by an arbitration clause, construed broadly under Fiona Trust v Privalov (2007) in English law.
Zone of Casualty Response X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: Geographic area over which salvors and OPA 90 responders are contracted to respond within prescribed times.
Zone of Compliance X146. Port State Control Regimes, MoUs, and Inspection Systems: An informal term for the threshold a ship must clear (deficiency rectification) before sailing after detention.
Zone of Confidence X73. Marine Hydrography, Charting and ENC: ZOC, the qualitative classification of survey reliability encoded in S-57 attribute CATZOC and visualised on ENCs.
Zone of Confidence (ZOC) X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Chart quality indicator (A1, A2, B, C, D, U) per IHO S-67 used on ENCs.
Zone of Confluence X103. US Inland Waterway Towing and Barge: The reach of river near the junction of two waterways subject to combined current effects.
Zone of Hazard X28. Ship Recycling and End-of-Life: Risk-zoned area within a recycling yard subject to access control during operations.
Zone of Influence X13. Marine Salvage and Wreck Removal: Area around a casualty affected by current, wind, and pollution drift.
Zone of Influence Crane X104. Project Cargo Forwarders and Heavy Transport: Volume around a crane within which loads and personnel must be managed.
Zone of operation X156. Superyacht Industry, Builders, and Yacht Charter Market: Trading area declared on a yacht's REG Large Yacht Certificate, ranging from area restricted to unrestricted worldwide service.
Zone of Peace (Indian Ocean) E1. Maritime security, geopolitics and risk: 1971 UNGA Declaration framing regional security.
Zone of Reduced Resistance (ZRR) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Region of soft or fluidized seabed sediment used to facilitate cable burial.
Zone of responsibility X7. Flag State, Port State Control and Detention Vocabulary: Geographic coverage of a regional PSC MOU, defined in its Memorandum.
Zone of Restricted Anchoring X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Spatial restriction declared in nautical charts and notices to mariners protecting subsea infrastructure.
Zone of substantially interested States X163. Marine Accident Investigation Agencies and Landmark Inquiries: Practical determination by the lead investigating State of which other States qualify as substantially interested for the purposes of the investigation.
Zone of Welfare Cooperation X154. Maritime Welfare, Seafarer Charities, and MLC Rights: Practical model in major hub ports such as Singapore, Rotterdam, and Houston where ITF, ISWAN, missions, and union welfare offices coordinate cases.
Zone pilotage X32. Marine Pilotage and Pilot Operations: Pilotage organized by geographic zone within a larger pilotage authority.
Zone Plan (Alang) X118. Ship Recycling Yards, Beaches and Regulation: GMB-administered zonation of the Alang-Sosiya area dividing plots into beaching, cutting, and secondary processing zones.
Zone refining X47. Marine Fuel Quality and ISO 8217: Laboratory crystallization technique unrelated to bunker practice but cited occasionally in fuel research contexts.
Zone Repair X83. ISO Container Manufacturing and Leasing: Repair restricted to a defined zone of a container panel to limit replacement of full panels.
Zone Restriction X69. EGCS Scrubbers, SCR and Marine Air Emissions: Geographic limitation on EGCS operation, fuel sulfur or NOx emissions.
Zone Sampling X115. Marine Bunker and Cargo Surveying: Drawing of samples from upper, middle, and lower zones of a tank to assess vertical homogeneity of a liquid cargo.
Zone Security Level (SL) X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents: An IEC 62443 rating (SL 1-4) assigned to each shipboard zone based on threat capability it must resist.
Zone Selective Interlocking X67. Marine Electrical Systems and Shore Power: Protection scheme on marine LV switchboards in which downstream breakers signal upstream devices to delay tripping.
Zone Status (FTZ and Sanctions) X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: Free trade zones in jurisdictions including the UAE and Turkey have been highlighted in sanctions advisories as conduits for evasion.
Zone Stowage X1. Cargo Science, Commodities and Cargo Care: Cargo placed by climatic zone consideration.
Zone Survey X5. Marine Surveying and Inspection: Inspection by hazardous area zone classification under IEC standards.
Zone System X103. US Inland Waterway Towing and Barge: An informal reference to the dispatcher zones used by some inland operators to manage equipment.
Zone tariff X15. Ports, Terminals and Stevedoring: differentiated port dues by berth zone.
Zone Time F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Standard time of a 15-degree time zone, used at sea.
Zone time (ZT) X16. Nautical Science, Navigation and COLREGs: Time kept in a particular time zone.
Zone Time Clause X17. Chartering, Shipbroking and Freight Trading: Provision defining the time zone basis for hire payments and NOR tendering.
Zone valve X19. Engine Room Watchkeeping and UMS Operations: Sectional valve isolating part of a piping system.
Zone-controlled lighting X15. Ports, Terminals and Stevedoring: yard lighting switched by occupancy zones.
Zone, plug X26. Reefer Containers and Cold Chain Logistics: Bay or row on vessel or in terminal allocated for reefer connections, with dedicated breakers and monitoring.
Zong X39. Pre-1900 Maritime History: British slave ship from which 132 enslaved Africans were thrown overboard in November 1781, leading to the 1783 insurance case Gregson v Gilbert.
Zonguldak Bulent Ecevit University Maritime Faculty X121. Maritime Education, Academies and Universities: Turkish Black Sea coast maritime faculty in Eregli.
Zoning (Aquaculture) D4. Fisheries, aquaculture, blue economy and marine resources: Spatial allocation of aquaculture areas.
Zoning (Fisheries Management) X87. Fishing Vessels and Fisheries Management: Spatial allocation of fishing areas to gear types or fleet sectors under national plans.
Zoning (Galley) X41. Cruise Ship Public Health and VSP/USPH: Physical and procedural separation between raw, cooked, and ready-to-eat areas to control cross-contamination.
Zoning Permit X28. Ship Recycling and End-of-Life: Local planning consent governing the location and extent of a recycling facility.
Zoning plan C4. Ports, terminals and coastal/marine civil engineering: Land use zoning within the port area.
Zooarchaeology of Wrecks F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Study of faunal remains in shipwreck cargos.
Zoom lift X42. Offshore Wind Installation and Cable Lay: Reference rigging method.
Zoomlion ZAT24000H X104. Project Cargo Forwarders and Heavy Transport: Chinese-built all-terrain crane in the 2,000 tonne class.
Zoomlion ZCC9800W X104. Project Cargo Forwarders and Heavy Transport: Chinese-built crawler crane used in wind and industrial project lifts.
Zoonotic cargo X6. Container, Intermodal and Trade Codes: Live animal or animal-product shipments requiring veterinary controls.
Zoonotic disease X36. Shipboard Medical, Telemedicine and Seafarer Health: Animal-source infection (e.g., rabies, brucellosis) relevant for livestock carriers.
Zoonotic Risk (Provisions) X120. Marine Catering, Provisions and Ship Chandlers: Driver of veterinary certificate requirement on meat and poultry chandler deliveries.
Zooplankton D1. Physical and chemical oceanography and marine meteorology: Drifting animal plankton, important to upper-ocean carbon cycling.
Zooplankton Toxicity Testing X126. Marine Oil Spill Response and OPRC Regimes: Acute toxicity benchmark for dispersed oil under EPA LC50 protocols using Mysidopsis bahia and Menidia beryllina.
Zooxanthellae D3. Marine environmental science, pollution and conservation: Symbiotic dinoflagellates living in coral tissues.
Zopf Folkart Carving F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Northern European sailor folk-art motif.
Zopilote, Pacific Trader F1. Maritime History: Generic name applied to nineteenth century west-coast guano carriers.
Zorba X1. Cargo Science, Commodities and Cargo Care: Trade-name designation for shredded mixed non-ferrous metal scrap.
Zorzi Maritime Codex F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Venetian historic seamanship manuscript.
Zostera marina X10. Marine Biology, Fisheries and Oceanography: Eelgrass, the dominant seagrass of temperate Northern Hemisphere coasts.
ZPMC X14. Offshore Oil and Gas Marine Operations: Shanghai-based fabricator of jack-ups and crane vessels.
ZPMC (Shanghai Zhenhua Heavy Industries) X46. Container Terminal Operations: The Chinese state-owned manufacturer that supplies a majority share of new ship-to-shore quay cranes and a large share of rubber-tyred and rail-mounted gantries delivered worldwide.
ZPMC ASC X169. Container Terminal Cranes, Yard Equipment, and Lashing: Automated stacking crane built by ZPMC for fully automated container yards.
ZPMC Dual-Trolley STS X169. Container Terminal Cranes, Yard Equipment, and Lashing: Two-trolley ship-to-shore crane design with an intermediate platform between waterside and landside hoists.
ZPMC Megamax-24 X169. Container Terminal Cranes, Yard Equipment, and Lashing: ZPMC ship-to-shore crane sized to serve 24-row container vessels of 24,000 TEU and above.
ZPMC Neo-Panamax X169. Container Terminal Cranes, Yard Equipment, and Lashing: Class of ZPMC STS cranes sized for the New Panamax lock dimensions.
ZPMC Post-Panamax X169. Container Terminal Cranes, Yard Equipment, and Lashing: ZPMC STS crane class for vessels exceeding original Panama Canal width.
ZPMC RMG X94. Port Machinery and Quay Equipment Makers: ZPMC-built rail-mounted gantry produced for both manned and automated stacking applications.
ZPMC RTG X94. Port Machinery and Quay Equipment Makers: ZPMC-built rubber-tired gantry, the dominant supplier into Chinese and Southeast Asian terminals.
ZPMC STS X94. Port Machinery and Quay Equipment Makers: ZPMC-built ship-to-shore container crane, holding the majority share of global new STS deliveries.
ZPMC Tandem-40 Spreader X169. Container Terminal Cranes, Yard Equipment, and Lashing: ZPMC spreader configuration for tandem 40 foot container lifts.
ZPMC TOS X169. Container Terminal Cranes, Yard Equipment, and Lashing: Terminal operating system supplied by ZPMC with crane and automation packages.
ZTNA X107. Maritime Cybersecurity and OT Security: Zero Trust Network Access, a category of secure remote access technologies that brokers per session access to applications.
ZTT Submarine Cable X91. Submarines and Submarine Cable Systems: Chinese submarine cable manufacturer.
Zubr-class X130. National Coast Guards and Cutter Fleets: Russian air-cushioned landing craft sometimes operated by FSB Border Service in Black Sea.
Zuiderdam X24. Cruise, Passenger Ship and Ferry Operations: Holland America Vista class ship delivered 2002.
Zuiderzee X39. Pre-1900 Maritime History: Dutch inland sea, historically a key sheltered approach for shipping from the North Sea to Amsterdam.
Zuiderzee Museum F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Dutch open-air museum at Enkhuizen.
Zuiderzee Trade F1. Maritime History: Inland sea Dutch coastal commerce until partial closure in 1932.
Zuiderzee Works X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: Although primarily flood-defense, this Dutch project created the IJsselmeer and its associated CEMT Class VI navigation routes between Amsterdam, Lemmer, and Lelystad.
Zuidschermer X124. Dredging Industry and Reclamation Contractors: Dutch inland dredging project.
Zulu Flag F5. The Reference Layer: Glossary, Units, Signals and Information Sources: International Code of Signals letter Z, meaning "I require a tug."
Zulu Time F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Coordinated Universal Time (UTC), the navigation reference.
Zumwalt (USS) DDG-1000 X106. Naval Surface Combatants: Lead ship of the Zumwalt-class destroyer, commissioned 2016 with stealth tumblehome hull.
Zumwalt class X11. Naval Vessels, Warship Systems and Naval Architecture: USN DDG-1000 tumblehome multi-mission destroyer with two AGS 155 mm guns and Mk 57 PVLS.