RISOY (Diving support vessel, Norway flag) was last seen on AIS on Oct 2, 2026, 11:58 UTC, not moving, near Ballstad (Norwegian Sea). The crew-entered destination was BALLSTAD (voyage report via BarentsWatch AIS API, received Oct 2, 2026, 11:54 UTC). This report does not confirm the ship’s current route.

What kind of ship is RISOY?

RISOY is a diving support vessel sailing under the flag of Norway, built in 1956. The vessel is 31.5 m long with a beam of 6.9 m.

Who is recorded as the owner or manager of RISOY?

Subseapartner AS is recorded as Registered owner for RISOY (source: Wikidata). This source record does not independently confirm today’s ownership or management.

What sanctions and inspection records does Voydar hold for RISOY?

Voydar has no matched sanctions record displayed for RISOY 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 RISOY. Missing records do not establish whether the ship has been detained.

RISOY

Diving support vessel · Norway · built 1956 · AIS Class A

IMO5377563MMSI257078400Call signLEOVLast AIS position Oct 2, 2026, 11:58 UTC

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In short

RISOY (Diving support vessel, Norway flag) was last seen on AIS on Oct 2, 2026, 11:58 UTC, not moving, near Ballstad (Norwegian Sea). Its crew-entered AIS destination is BALLSTAD; its reported draught is 1 m (voyage report via BarentsWatch AIS API, received Oct 2, 2026, 11:54 UTC). Its last detected port call was at Ballstad: arrived Jun 22, 2026, left Jun 22, 2026. Registered owner: Subseapartner AS (source: Wikidata).

Vessel type: Diving support vessel
Flag: Norway
Year built: 1956
Gross tonnage: —
Size (length × beam): 32 m × 7 m
Registered owner: Subseapartner AS

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Last reported position

received Oct 2, 2026, 11:58 UTC

Position: 68.072° N, 13.5344° E
Area: Norwegian Sea
StatusWhat do AIS statuses mean?: Under way sailing
Speed: 0 kn
Course: 92°
Heading: 13°

68.072° N, 13.5344° 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: RISOY
IMO numberWhat is an IMO number?: 5377563
MMSIWhat is an MMSI?: 257078400
Call signWhat is a call sign?: LEOV
Flag: Norway
Vessel type: Diving support vessel
AIS ship type: Diving ops
Gross tonnageGross tonnage vs deadweight: —
Length overall: 31.5 m
Beam: 6.9 m
Year built: 1956

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.

Registered owner: Subseapartner AS
Source: Wikidata · reported · confidence 0.8 · retrieved Sep 22, 2026

Timeline

Dated events for this ship from every source Voydar holds, newest first. Each line names its source; derived items say how they were derived.

Date	Event	Source
Jun 22, 2026, 14:23 UTC	Left BallstadAIS-detected	Voydar port-call detector (AIS geofence)
Jun 22, 2026, 10:19 UTC	Arrived at BallstadAIS-detected	Voydar port-call detector (AIS geofence)

Owner, operator and manager changes found by comparing yearly EU MRV reports are dated to the reporting year ("during 2025"), not to a day. Port calls here are the most recent only; the full lists are further down.

Port calls

Two kinds of evidence, kept apart: calls Voydar detected from the ship's AIS positions, and arrivals and departures published by port authorities and customs records.

Detected from AIS AIS-detected

Port	Arrived	Departed	Time in port
Ballstad NOBSD	Jun 22, 2026, 10:19 UTC	Jun 22, 2026, 14:23 UTC	4 h 4 min

Detected by Voydar when the ship's AIS positions stayed slow inside a harbour area. Calls shorter than 30 minutes are not shown. Depends on AIS reception; detection started on June 8, 2026.

Frequently asked questions

Where is RISOY now?: RISOY (Diving support vessel, Norway flag) was last seen on AIS on Oct 2, 2026, 11:58 UTC, not moving, near Ballstad (Norwegian Sea). The crew-entered destination was BALLSTAD (voyage report via BarentsWatch AIS API, received Oct 2, 2026, 11:54 UTC). This report does not confirm the ship’s current route.
What kind of ship is RISOY?: RISOY is a diving support vessel sailing under the flag of Norway, built in 1956. The vessel is 31.5 m long with a beam of 6.9 m.
Who is recorded as the owner or manager of RISOY?: Subseapartner AS is recorded as Registered owner for RISOY (source: Wikidata). This source record does not independently confirm today’s ownership or management.
What sanctions and inspection records does Voydar hold for RISOY?: Voydar has no matched sanctions record displayed for RISOY 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 RISOY. Missing records do not establish whether the ship has been detained.

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