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Port tenders

A harbour service vessel: buoy tenders, workboats and port service craft. Voydar tracks 81 ships of this type by IMO number, 37 of them heard on AIS in the last 7 days.

Ship types explained

Largest port tenders by gross tonnage

Gross tonnage measures a ship's enclosed volume, not its weight. From the ship's registered particulars (Wikidata, EU MRV and other public sources).

ShipGTBuiltFlagLast AIS
CARNIVAL LEGEND85,9422002BahamasOct 2, 2026, 22:48 UTC
ODIN R16,2892024DenmarkOct 3, 2026, 03:00 UTC
Ile d'Yeu14,5022001FranceJun 20, 2026, 03:56 UTC
ACTA CENTAURUS6,0782019NetherlandsSep 29, 2026, 07:37 UTC
GRAMPIAN TYNE5,0332023United KingdomOct 1, 2026, 16:50 UTC
Sormovskiy 30583,0411987RussiaSep 27, 2026, 18:32 UTC
OCEAN OBSERVER2,8201987United KingdomOct 2, 2026, 23:11 UTC
TINNO1,9861991NorwaySep 25, 2026, 23:01 UTC
USCGC Aspen1,9302001—not on AIS
BETA JUNIZ1,6952012BrazilOct 2, 2026, 20:56 UTC

Newest port tenders

By year built, from the ship's registered particulars.

ShipGTBuiltFlagLast AIS
NP6403692026NetherlandsOct 3, 2026, 03:26 UTC
ODIN R16,2892024DenmarkOct 3, 2026, 03:00 UTC
GRAMPIAN TYNE5,0332023United KingdomOct 1, 2026, 16:50 UTC
ACTA CENTAURUS6,0782019NetherlandsSep 29, 2026, 07:37 UTC
MHO Gurli—2019DenmarkOct 3, 2026, 03:36 UTC
KIERA FIONA—2017United KingdomSep 19, 2026, 10:05 UTC
OV BOEKFJORD9372016NorwayOct 3, 2026, 03:27 UTC
BETA JUNIZ1,6952012BrazilOct 2, 2026, 20:56 UTC
NORDERGRUENDE4992012GermanyOct 3, 2026, 03:06 UTC
SVITZER HERON—2012AustraliaAug 4, 2026, 22:43 UTC

Flags

The flags port tenders in Voydar's records sail under most often.

Recently seen on AIS