Extended Operational and Trade Vocabulary
Tugs and Towage Industry glossary (page 2)
The towage-industry vocabulary: the towage operators and their parents (Svitzer under Maersk), bollard-pull certification, escort-towage assignments by size class, and the towing-arrangement terms. Grounds each term in the towage company or the harbor-escort operation it belongs to, complementing the tug-operations section.
263 defined terms.
Showing 13 on this page (page 2 of 2).
V
- VWT
- Voith Water Tractor abbreviation used by builders and operators.
W
- Wartsila
- supplier of port-area thrusters, automation, and LNG bunkering systems.
- Wartsila WSP
- Wartsila steerable thruster with permanent magnet motor for offshore vessels.
- Wijsmuller
- Historical Dutch towage and salvage company, absorbed into the Svitzer and Boskalis groups.
- Wilson Sons
- Brazilian maritime services group providing harbor towage at ports across Brazil.
- Winch Brake
- Mechanism holding the towline against load.
- Working line
- stevedore line of containers being moved.
- Workship
- Offshore support vessel performing construction, diving, and standby duties, often grouped within tug operator fleets.
- WSP-30
- Voith Schneider Propeller unit designation indicating a 30-class size used on harbor tugs.
- WSP-40
- Voith Schneider Propeller unit designation indicating a 40-class size used on larger harbor and escort tugs.
Y
- Yokohama Pneumatic Fender
- Inflatable pneumatic fender used as ship-to-ship and tug-to-ship cushion.
Z
- Zero Speed Bollard Pull
- Bollard pull recorded at zero forward speed during a static trial, the standard reporting basis.
- Zone of Influence
- Area around a casualty affected by current, wind, and pollution drift.