What kind of ship is USNS Effective?

USNS Effective is a naval vessel sailing under the flag of United States, built in 1993. The vessel is 74 m long and has a gross tonnage of 3,347.

What sanctions and inspection records does Voydar hold for USNS Effective?

Voydar has no matched sanctions record displayed for USNS Effective from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels and the New Zealand Russia Sanctions Register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for USNS Effective. Missing records do not establish whether the ship has been detained.

USNS Effective

Naval vessel · United States · built 1993 · AIS Class A

IMO8923997MMSI367836000Call signNCWLLast AIS position Sep 25, 2026, 11:37 UTC

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In short

USNS Effective (Naval vessel, United States flag) was last seen on AIS on Sep 25, 2026, 11:37 UTC, moored, near Jurong (Strait of Malacca). Voydar has no more recent AIS position for this ship. Its current location cannot be established from this report. Its crew-entered AIS destination is PWBG-B; its reported draught is 8 m (voyage report via AISstream.io global terrestrial AIS, received Sep 25, 2026, 10:14 UTC).

Vessel type: Naval vessel
Flag: United States
Year built: 1993
Gross tonnage: 3,347
Size (length × beam): 74 m
Registered owner: —

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Photo of USNS Effective — Photo: Military Sealift Command · Licence: Public domain · via Wikimedia Commons

Last reported position

received Sep 25, 2026, 11:37 UTC

Position: 1.2684° N, 103.644° E
Area: Strait of Malacca
StatusWhat do AIS statuses mean?: Moored
Speed: 0 kn
Course: 357°
Heading: 92°

1.2684° N, 103.644° E

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Voydar detected no port call in the last 30 days.

Port calls are detected by Voydar from AIS (at least 30 minutes slow inside a harbour area); see Port calls below.

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Identity & particulars

Name: USNS Effective
IMO numberWhat is an IMO number?: 8923997
MMSIWhat is an MMSI?: 367836000
Call signWhat is a call sign?: NCWL
Flag: United States
Vessel type: Naval vessel
AIS ship type: Military ops
Gross tonnageGross tonnage vs deadweight: 3,347
Length overall: 74 m
Beam: —
Year built: 1993

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
Source: Wikidata · reported · confidence 0.8 · retrieved Sep 22, 2026

About USNS Effective

USNS Effective (T-AGOS-21) is a Victorious-class ocean surveillance ship acquired by the U.S. Navy in 1993 and assigned to the Navy's Special Mission Program.

Summary from Wikipedia, licensed CC BY-SA.

Frequently asked questions

Where is USNS Effective now?: USNS Effective (Naval vessel, United States flag) was last seen on AIS on Sep 25, 2026, 11:37 UTC, moored, near Jurong (Strait of Malacca). Voydar has no more recent AIS position for this ship. Its current location cannot be established from this report. The crew-entered destination was PWBG-B (voyage report via AISstream.io global terrestrial AIS, received Sep 25, 2026, 10:14 UTC). This report does not confirm the ship’s current route.
What kind of ship is USNS Effective?: USNS Effective is a naval vessel sailing under the flag of United States, built in 1993. The vessel is 74 m long and has a gross tonnage of 3,347.
What sanctions and inspection records does Voydar hold for USNS Effective?: Voydar has no matched sanctions record displayed for USNS Effective from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels and the New Zealand Russia Sanctions Register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for USNS Effective. Missing records do not establish whether the ship has been detained.

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