| Entry | Förklaring |
| W | White (hvid), Watt, West (vest) |
| w&f | Water and feed |
| w&i | Weighing and inspection |
| w&m | War and marine |
| w&r | Water and rail |
| W-lig | vestlig |
| W. | West (vest) |
| w/m | Weight / measurment |
| wa | With average |
| WAAS | Wide Area Augmentain System, positionssystem for fly/skibstrafik. Har samme egenskaber som systemet: ENNOS, se dette |
| WARPET | Western Australian Petroleum Company |
| Wasser-alen | "Længdemål fra Christian IV skibsbygningstid, bl.a. ""FIDES"" og ""NELDEBLADET"", år 1613. een wasseralen = 55 cm." |
| Wawe-piercer catamanran | Hurtigsejlende katamaran med flere smalle/spidse skrog, se HSS Længde: 25-60 meter, fart: 30-45 kn., rækkevidde: 300 sm. |
| Wawex | Radarsystem til måling af bølgehøjder, anvendes især i HSS-fartøjer, se HSS |
| wb | Water ballast |
| wb | West bound, Waybill, Water ballast |
| wccon | Wherter customs cleared or not |
| WCCON | Whether customs cleared or not |
| wci | West coast India |
| wcmex | West Coast Mexico |
| wcs | se under: QI. WCS: Worst Case Scenario |
| wcsa | West coast south america |
| wcuk | West coast UK |
| wcus | West coast US |
| Wd | sea-weed (tang) |
| WEC | World Equipment Control, softwareprogram til styring af containere. |
| WELCON | Coal charter party |
| WEMT | West European Confedaration of Maritime Sicieties. Maritime sammenslutninger i Vest europa. |
| WEND | World Wide Electronic Navigational Chart Data Base |
| WFP | World Food Programme. FN`s afdeling for fødevarehjælp til katastroferamte områder. Disse transporter foretages bl.a. af danske rederier. |
| WFTO | World Federation of Trade Unions |
| wg | Weigh guaranteed |
| wgt | Weight |
| Wh | Watt-hours |
| whd | Working hatch per day |
| whf | Wharf |
| Whis | Fog whistle |
| WHO | World Health Organization |
| whse | Warehouse |
| WIBON | Whether in berth or not |
| wibon | Wherter in berth or not |
| WIFPON | Whether in free pratique or not |
| wifpon | Wherter free practique or not |
| Winch | Spil, laste/lossespil, brasespil osv. |
| Windjammer | Stort sejlskib |
| WIPON | Whether in port or not |
| wire | Spundet tov af galvaniseret ståltråd |
| WISTA | Women`s International Shipping and Trading Association |
| Wk | Wreck |
| WLC | Wonsild Liquid Carriers |
| WLTOCH (distance) | Water line-to-hatch coaming |
| WMA | Weitemayer Maritime Advice, dansk firma |
| wmed | West mediterranean |
| WMO | World Meteorological Organization |
| WMO | World meteorological Organisation |
| WMO | W.Meinertz-Olesen, elinstallationsfirma, ejet af Nordsøværftet og århus flydedok. |
| WMU | World Maritime University, Malmø (Under IMO). Uddanner indenfor Maritim administration, maritim uddannelse, maritim sikkerhed, havneadministration, shipping mv. Især folk fra den tredie verden samt tidligere østbloklande, undervises her. |
| wna | Winter north atlantic |
| WNC | Wärtsilä NSD Corporation, sammenlægning af Wärtsilä Diesel og New Sulzer Diesel, (1997), se også NSD. |
| wo | written off |
| wob | Washed over board |
| WOG | Without Guarantee |
| wog | Without guarantee, With other goods |
| Worldscale | Internationalt ratesystem for tankskibe med fastsatte basisrater for alle rejser, der forekommer i International oliefart. Basisraten er lig: 100 Worldscale justeres løbende for større ændringer i havneudgifterne, men justeres kun to gange om året for ænd |
| wp | Weather permitting, Way point, Without prejudice |
| wpa | With particular average |
| WPC | World Petroleum Congress |
| WPD | Weather permitting day |
| wr | Warehouse receipt |
| WRIC | Wire rods in coils |
| wro | War risk only |
| wrtd | Without reference to date |
| WS | Worldwide tanker nominal freight Scale. Et indeks, der angiver tankraten uafhængig af skibsstørrelse og rute. |
| wtba | Wording to be agreed |
| WTO | World Trade Organization |
| wts | Working Time Saved |
| wtsbe | Working time saved both ends |
| wty | Warranty |
| ww | World Wide, Weather working |
| wwd | Weather Working Days |
| wwf | Australian Waterside Workers Federation |
| wwr | When where ready |
| WWS | Walker Wingsail System, britisk firma, pioner inden for moderne sejlføring, især til bulk og tankskibe. |
| WWW | World Wide Weatherrouting, under DMI, se dette |
| WWWW | Wibon, Wccon, Wifpon, Wipon |