Extended Operational and Trade Vocabulary

Ports, Terminals and Stevedoring glossary

The operational vocabulary of ports, terminals, and stevedoring: access channels and accumulation yards, accommodation ladders, abnormal-load handling, the port trade bodies (AAPA), and the cargo-handling and yard-planning terms used on the quay. The operations-floor counterpart to the port civil-engineering section.

728 defined terms.

Showing 250 on this page (page 1 of 3).

A

AAPA: American Association of Port Authorities, trade body representing seaports in the Americas.
Abnormal load: cargo exceeding standard dimensions or weight that requires special handling and permits.
Access channel: dredged waterway leading from sea to the port basin.
Accommodation ladder: Inclined ladder hung over the ship's side for access.
Accumulation yard: pre-stow area where containers are staged before vessel loading.
ACEP: Approved Continuous Examination Programme for CSC container inspection.
Acid jetty: dedicated berth for handling sulfuric, phosphoric, or other acidic liquid cargoes.
Active berth: berth currently occupied by a vessel under cargo operations.
ADCP: Acoustic Doppler Current Profiler used in port channels to monitor currents.
Aframax berth: tanker berth designed for crude carriers of roughly 80,000 to 120,000 dwt.
AGV: Automated Guided Vehicle, driverless container transporter on the apron, used at Rotterdam ECT, APM Maasvlakte II, and Long Beach LBCT.
AGV battery swap: automated exchange of depleted batteries on electric AGV fleets.
Air draft: Vertical distance from waterline to highest fixed point of the ship.
Air gap: Vertical distance from the fuel surface to the top of the tank, used in ullage measurement.
Alcatel-Lucent OmniPCX: legacy port radio/telephony backbone used in several terminals.
Alibi memory: tamper-evident weighbridge record retained for legal verification.
Allision: contact between a moving vessel and a fixed object such as a wharf or bridge.
Alongside: Beside a pier, jetty, or another vessel.
AMP: Alternative Maritime Power, shoreside electrical supply to berthed vessels.
AMS: Automated Manifest System, US CBP electronic manifest filing for arriving cargo.
Anchor berth: designated anchorage position assigned by port control.
Anchor handling tug: tug fitted with stern roller and winch for setting and lifting anchors.
Anchorage: water area where vessels can safely anchor while awaiting berth.
Annual throughput: total cargo or TEU handled in a calendar year.
Apron: Quayside area between ship and stacking yard.
Apron rail: waterside crane rail mounted on the apron.
Arbiter pilot: senior pilot supervising a manoeuvre involving multiple pilots.
Articulated tug barge: ATB unit common in US coastal trade.
ASC: Automated stacking crane.
ASD tug: Azimuth Stern Drive tug with two stern-mounted azimuth thrusters.
Assist tug: tug supporting a vessel during berthing or unberthing.
ATA: Actual Time of Arrival at the pilot station or berth.
ATB: Articulated Tug Barge, integrated unit used in US coastal oil response and lightering.
ATD: Actual Time of Departure recorded on the statement of facts.
Athwartship: across the ship from one side to the other.
Atlas crane: legacy designation for several historic German harbor cranes.
Autogate: automated terminal gate using OCR and RFID without manual check-in.
Automated mooring: vacuum or magnetic mooring systems such as Cavotec MoorMaster.
Automated terminal: container terminal where horizontal transport and stacking are unmanned.
Available draft: maximum permitted vessel draft at a given berth or channel tide window.
Awaiting berth: vessel status when at anchor or drifting before a berth is available.

B

Back reach: distance the STS crane trolley travels landward of the waterside rail.
Backhoe Dredger: Hydraulic-excavator-mounted dredger.
Backreach stack: container row landward of the STS rail, often used for hatch covers.
Bagged cargo: Dry bulk commodities carried in bags rather than loose.
Bale capacity: Cargo volume measured to the inside of frames and below beams.
Ballast water reception: shore facility to receive ballast under MARPOL or BWM Convention.
Banksman: signaler directing equipment movements in restricted areas.
Barge berth: Berth dedicated to inland barge calls.
BAS: Berth Allocation System for scheduling vessels to berths.
Basin: Enclosed water area in a port.
Bay plan: Stowage diagram showing every container slot on a vessel by bay, row, and tier.
Bayer SmartGate: example OCR-based gate technology installed at several European terminals.
Beach gantry: gantry crane operating on a beach landing, used in military logistics.
Beam: Maximum breadth of the ship.
Beam restriction: berth or lock constraint on vessel breadth.
Bear off: Push off from a wharf or another vessel.
Bedplate: Steel base on a tank container frame supporting the pressure vessel.
Bell-mouth: Flared suction inlet at the bottom of a bunker tank.
Beneficial reuse: productive use of dredged material for beach nourishment or land reclamation.
Berth: Place where a ship is moored; sleeping bunk.
Berth allocation: assignment of vessels to specific berths and time windows.
Berth deepening: dredging to increase water depth alongside.
Berth occupancy: percentage of time a berth is occupied by vessels.
Berth pocket: dredged area immediately alongside a berth.
Berth productivity: cargo or moves handled per berth per unit time.
Berth window: scheduled time slot allocated to a liner service at a berth.
BIMCO Heavycon: standard charterparty form used for heavylift project cargoes.
Black gang: historic term for the engine-room crew, occasionally used in stevedoring context.
Block stowage: Carrying cargo of one shipper or destination in a contiguous block.
Blue Anchor: PSA/Hutchison-style berth scheduling protocol used in some Asian ports.
BMPH: Berth Moves Per Hour, productivity metric across all cranes working a vessel.
Boatswain's Chair: Rigging device used in mast climbing.
BOG: Boil-Off Gas handling at LNG import terminals.
Bollard: Mooring fitting on quay or dolphin.
Bollard pull: Tug pulling force in tonnes.
Booking number: carrier-assigned reference for a container shipment.
Boom: Spar extending the foot of a sail.
Boom lock: mechanical device securing the STS boom in the raised position.
Bow line: forward mooring line leading from the bow.
Bowsprit clearance: distance between vessel's bow and apron equipment.
Brake test: periodic load test of crane brakes per OSHA, BS, or DIN standards.
Breakbulk: Cargo loaded as individual items or units, not in containers and not in bulk.
Breakwater: Coastal structure providing wave shelter.
Brow: portable gangway, particularly in naval usage.
BTP: Berth Throughput Performance index.
Buffer stack: yard area for short-term holding of containers during peak operations.
Bulk carrier berth: berth equipped with shore unloaders or grab cranes for dry bulk.
Bulldozer trim: in-hold trimming of bulk cargo with shipboard or shoreside dozers.
Bullnose: Towing notch at the AHTS stern aiding wire alignment.
Bunker arm: marine loading arm used for bunker fuel transfer.
Bunkering: supplying fuel to a vessel by barge, truck, or shoreside pipeline.
Buoy: Floating navigation mark or float used to mark a mooring.
Burrowing-type tug: tug with very high bollard pull used in confined harbors.

C

C-TPAT: Customs-Trade Partnership Against Terrorism, US CBP supply-chain security program.
Cable laid: Rope laid up of three hawser-laid ropes, left-handed.
Cabotage berth: berth restricted to domestic coastwise traffic under national cabotage law.
Caisson: Large concrete box used in quay walls and dry docks.
Call sign: vessel's unique radio identifier used during port communications.
Camel: floating timber or steel separator between vessel and quay.
Capesize berth: dry bulk berth designed for vessels too large for the Suez Canal at full load.
Capital dredging: initial dredging to deepen or widen a channel or berth.
Captain of the Port: USCG officer with authority over a US port zone.
Cargo Manifest: Statutory list of cargo carried.
Cargo throughput: total volume or weight of cargo handled in a defined period.
Carousel: Rotating storage table on cable/umbilical lay vessels.
Cassette: heavy-duty roll trailer used for project cargo and steel.
Catenary: sag of a mooring line or shore-power cable between supports.
Cavotec MoorMaster: automated vacuum mooring system used in container, ferry, and bulk berths.
CDM Smith: international port and dredging engineering consultancy.
Cellular vessel: container ship with vertical cell guides for stowage.
Cement terminal: specialized dry bulk terminal with silos and pneumatic systems.
Channel pilot: pilot guiding a vessel through a restricted channel.
Chassis: Wheeled trailer that carries an ISO container by road.
Chassis pool: shared chassis fleet operated under cooperative arrangements such as TRAC Intermodal or DCLI.
Chemical jetty: berth handling segregated chemical parcels under MARPOL Annex II.
Chiksan: SPM-brand marine loading arm, often used generically for any rigid loading arm.
Chip carrier berth: wood-chip terminal equipped with high-volume shore unloaders.
CIQ: China Inspection and Quarantine, now part of GACC.
Civil mooring: bollard, buoy, or dolphin designed by port engineering standards (BS 6349, PIANC).
Clamshell grab: two-jaw bucket used by grab cranes to discharge bulk.
Clean ballast: ballast water that meets discharge criteria under MARPOL.
Cleat: Two-horned fitting around which a line is belayed.
Cluster: group of berths under shared management at large terminals.
CMI: Comite Maritime International, NGO contributor to maritime-law unification.
CMU: Concrete Masonry Unit used in lightweight quay walls.
Coastal pilot: pilot certified for coastal pilotage outside compulsory areas.
Cold Ironing: Onshore power supply enabling ships to shut down engines in port.
Combi terminal: facility handling both containers and conventional cargo.
Common rail: shared apron rail used by adjacent STS cranes.
Compulsory Pilotage: Issue handled through SOLAS V and IMO resolutions on ships' routeing.
Compulsory tug: rule requiring tug assistance for specified vessels.
Concession agreement: Landlord port concession of terminal operations.
Confined entry: working in an enclosed space under permit-to-work procedures.
Conoco bow loading: tanker bow loading system for offshore terminals.
Container freight station: CFS, facility for stuffing and stripping LCL cargo.
Container terminal: Terminal for handling intermodal containers.
Container yard: CY, in-port container storage area.
Containment area: bunded area at tanker manifolds to catch spills.
Continuous miner: bulk handling equipment for in-hold mining of solid cargoes.
Contract of affreightment: COA, agreement to carry a stated quantity of cargo over a period.
Conveyor: continuous belt for moving dry bulk between vessel, shore, and storage.
Cope: outer quay edge supporting fender panels and bollards.
Cope stone: precast concrete element forming the quay edge.
Country tug: small inland tug operating in shallow waters.
Coupler: connector between mafi trailers or rail wagons.
Crane productivity: average gross moves per working hour per crane.
Cross-section yard: yard layout perpendicular to the quay, typical of automated terminals.
Cruise terminal: Terminal handling passenger cruise vessels.
CSD: Cutter Suction Dredger, removes hard material through a rotating cutter head.
CSI: Container Security Initiative, US program for overseas screening of US-bound containers.
CTA: Container Terminal Altenwerder, HHLA's flagship automated terminal in Hamburg.
Cubic Capacity: Volume measurement of a hold or container in cubic meters.
Custody Transfer: Quantity measurement event when cargo title passes ship/shore.
Cutter ladder: arm carrying the cutter head on a CSD.
CY/CY: Container yard to container yard service terms.

D

Davit: Curved crane for hoisting and lowering boats and stores.
Days alongside: vessel time at berth between first and last line.
DCT Gdansk: Deepwater Container Terminal operated by PSA in Poland.
Dead load: static weight of crane structure on the rails.
Deadman switch: operator-presence control on cranes and forklifts.
Deadweight tonnage: DWT, total weight a vessel can carry.
Decarbonization corridor: green shipping route between participating ports.
Deck crane: ship-mounted crane used for self-discharge.
Decline test: brake test on inclined ramps for ro-ro tractors.
Deep-sea pilot: pilot navigating routes such as the English Channel or Skagerrak.
Deepening project: Capital dredging to increase channel depth.
Delivery order: D/O, document authorizing release of cargo to the consignee.
Demurrage: Liquidated damages for detention of ship beyond laytime.
Density: cargo mass per unit volume, governs stowage factor.
Departure draft: vessel draft after loading, declared on sailing.
Depth alongside: water depth measured at the berth at chart datum.
Designated mooring: identified bollard and line plan for a specific vessel class.
Detention: PSC action holding a ship until deficiencies are rectified.
Detention pond: stormwater holding basin at terminals.
Detroit Pneumatic: legacy supplier of cargo handling equipment, often referenced in specs.
DGPS: Differential GPS using IALA radio beacons.
DGSA: Dangerous Goods Safety Adviser per ADR/RID regulations.
Diesel hydraulic: power configuration on RTGs and mobile harbor cranes.
Diesel-electric crane: STS crane with diesel genset feeding electric drives.
Differential settlement: uneven subsidence of quay foundations.
Dock: enclosed water body with or without lock gates.
Dock dues: charge for use of port infrastructure.
Dockmaster: official directing dock operations, especially in lock-controlled docks.
Doddington pilot: dummy entry, omitted; real entry below.
Dolphin: Isolated marine structure.
Doppler current meter: hydrographic device used in pilot PPUs.
Double banking: two vessels moored alongside each other at one berth.
Double cycling: STS strategy alternating load and discharge moves to cut idle hoists.
Double-stack rail: intermodal rail with containers stacked two high.
Draft survey: Cargo weight determination by hydrostatic calculation.
Dredger: vessel that removes seabed material.
Dredging window: scheduled period in which dredging is permitted.
Drumming: securing oil drums for sea transport at breakbulk terminals.
Dry bulk terminal: Terminal handling dry bulk commodities.
Dry dock: Basin pumped dry for hull work.
Dry port: inland terminal connected to a seaport by rail or road.
Dual cycle: see double cycling.
Dual hoist: STS crane with two main hoists for tandem operations.
Dual rail: terminal with two parallel rail tracks under the STS portal.
Dust suppression: water spray, wind fences, or enclosed conveyors to control dust.
Dwell time: duration containers or cargo remain in the terminal.

E

EBI Group: supplier of port lighting and electrification systems.
ECDIS overlay: overlay of port boundaries and traffic patterns on ECDIS.
ECMT: European Conference of Ministers of Transport, source of regulatory references.
Eco-port: port operating under ESPO EcoPorts environmental management scheme.
EDI: Electronic Data Interchange, structured business-to-business message exchange.
EDIFACT: UN/EDIFACT, the United Nations EDI standard used in container shipping.
Electric RTG: eRTG with cable reel or busbar power supply, reducing diesel use.
Elevator boom: ship loader boom that elevates to clear vessel rails.
Empty depot: yard for empty containers awaiting redistribution.
Empty handler: forklift with top spreader for empty containers, e.g., Kalmar DCG, Hyster H22XM-12EC.
Energy recovery: regenerative braking on STS and ASC drives feeding back to grid.
ENG-1: UK seafarer medical certificate, occasionally checked at gate for crew change.
Entrance channel: dredged approach from sea to harbor.
ERC: Emergency Release Coupling on LNG and chemical loading arms.
ESC: Emergency Shutdown system at oil and gas terminals.
ESD: Emergency Shutdown valve at the ship-shore interface.
ESI: Environmental Ship Index used by participating ports for incentive discounts.
ESPO: European Sea Ports Organisation.
ETA: Estimated time of arrival.
ETB: Estimated time of berthing.
ETD: Estimated time of departure.
EU Maritime Single Window: harmonized reporting environment under Regulation 2019/1239.
Eurogate: terminal operator with facilities in Hamburg, Bremerhaven, La Spezia, Tangier.
Excavator dredger: see backhoe dredger.
Exposed berth: berth in unprotected waters subject to wave and swell.
Extended gate: inland depot acting as a terminal extension for customs purposes.
EzGate: TBA-supplied autogate system used at several terminals.

F

Face line: rope leading at an acute angle from a mooring fairlead.
Fairlead: Fitting that leads a rope in the desired direction without chafe.
Fairway: Navigable channel.
FAL Convention: Convention on Facilitation of International Maritime Traffic, 1965.
Fall protection: harness, anchor, and lanyard required at height per OSHA/EN 363.
Fastline: motorized launch handling mooring lines at exposed berths.
Fender: Energy absorbing system at berth, designed per PIANC WG211 (formerly WG33).
FEPORT: Federation of European Private Port Operators.
Ferry terminal: facility for ro-pax ships with linkspans and passenger walkways.
FFRP: glass-fibre reinforced plastic, used in fender panels and bollards.
Fifteen-foot draft: indicative shallow-water berth designation.
Fillet weld: common weld type in crane fabrication.
First line ashore: timestamp marking start of berthing.
Flag pole: light signal mast at lock entrances.
Floating Crane: Heavy-lift crane vessel.
Floating dolphin: buoyant berthing structure for tide-prone ports.
Floating fender: pneumatic Yokohama-type fender used in ship-to-ship operations.
Floating production storage: FPSO, offshore oil production unit (not strictly a port asset).
Floating storage regasification unit: FSRU, moored vessel regasifying LNG for grid injection.
FLT: Forklift Truck, used widely in breakbulk and warehousing.
Foot of crane: support area of an STS crane portal on the apron.