Seisho Maru
ship
In short
Seisho Maru (ship) has no AIS position on record with Voydar.
- Vessel type
- ship
- Flag
- —
- Year built
- —
- Gross tonnage
- —
- Size (length × beam)
- —
- Registered owner
- —

Last reported position
No AIS position on record for this vessel. Identity and particulars are below.
Identity & particulars
- Name
- Seisho Maru
- IMO numberWhat is an IMO number?
- 2217547
- MMSIWhat is an MMSI?
- —
- Call signWhat is a call sign?
- —
- Flag
- —
- Vessel type
- ship
- Gross tonnageGross tonnage vs deadweight
- —
- Length overall
- —
- Beam
- —
- Year built
- —
A tag next to a value names the register that supplied it (hover or tap it for the record and date). Values without a tag come from the ship's own AIS broadcasts or from Wikidata. Position and identity are derived live from AIS.
Ownership & management
Each line shows where the fact comes from. Links backed by an identifier point to the company page.
- Operator
- United States Navy(not linked to a company record)Source: Wikidata · reported · confidence 0.6 · retrieved Jun 10, 2026
About Seisho Maru
Seisho Maru (Japanese: 盛祥丸, Seishō Maru ) was a cargo ship for Mitsui Bussan Kaisho in military service that was sunk by an American submarine during World War II. The ship had been built as SS West Caruth, a cargo ship for the United States Shipping Board (USSB) shortly after the end of World War I. Shortly after completion, the ship was inspected by the United States Navy for possible use as USS West Caruth (ID-2850) but was neither taken into the Navy nor ever commissioned under that name. Before being sold to Japanese owners in 1928, she was also known as SS Exmoor and SS Antonio Tripcovich. West Caruth was built in 1918 for the USSB, as a part of the West boats, a series of steel-hulled cargo ships built on the West Coast of the United States for the World War I war effort, and was the second ship built at Southwestern Shipbuilding in San Pedro, California.
Summary from Wikipedia, licensed CC BY-SA.
Frequently asked questions
- Where is Seisho Maru now?
- Voydar has no displayable AIS position for Seisho Maru in this profile. A coverage gap does not establish whether the ship is transmitting or where it is now.
- What kind of ship is Seisho Maru?
- Seisho Maru is a ship.
- What sanctions and inspection records does Voydar hold for Seisho Maru?
- Voydar has no matched sanctions record displayed for Seisho Maru from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels, the New Zealand Russia Sanctions Register and the French national asset-freeze register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for Seisho Maru. Missing records do not establish whether the ship has been detained.
Use this data
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