SD Impulse
Tug · United Kingdom · built 1993 · AIS Class A
In short
SD Impulse (Tug, United Kingdom flag) was last seen on AIS on , not moving, near Faslane (North Atlantic Ocean). Its crew-entered AIS destination is FASLANE; its reported draught is 4.2 m (voyage report via AISstream.io global terrestrial AIS, received Oct 3, 2026, 03:18 UTC).
Current voyage: from Faslane (departed Sep 16, 2026, 11:23 UTC) to FASLANE
- Vessel type
- Tug
- Flag
- United Kingdom
- Year built
- 1993
- Gross tonnage
- 319
- Size (length × beam)
- 32 m × 10 m
- Registered owner
- —
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Last reported position
received- Position
- 56.0533° N, 4.8203° W
- Area
- North Atlantic Ocean
- StatusWhat do AIS statuses mean?
- Under way using engine
- Speed
- 0 kn
- Course
- 4°
- Heading
- 170°
Last 30 days: 4 port calls (Faslane and Helensburgh).
Port calls are detected by Voydar from AIS (at least 30 minutes slow inside a harbour area); see Port calls below.
A year of history in the Terminal (Plus) · the full archive since June 1, 2026 (Pro)
Try the live demo, no sign-upIdentity & particulars
- Name
- SD Impulse
- IMO numberWhat is an IMO number?
- 9050797
- MMSIWhat is an MMSI?
- 232001480
- Call signWhat is a call sign?
- GCOW
- Flag
- United Kingdom
- Vessel type
- Tug
- Gross tonnageGross tonnage vs deadweight
- 319
- Deadweight (DWT)
- Source: Wikidata, record Q117052942. Added to Voydar on September 23, 2026. Licence: CC0 1.0.92 t
- Length overall
- 32 m
- Beam
- 10 m
- Year built
- 1993
United KingdomA 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.
No owner, operator or manager is recorded for this vessel yet.
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 |
|---|---|---|
| Left FaslaneAIS-detected | Voydar port-call detector (AIS geofence) | |
| Arrived at FaslaneAIS-detected | Voydar port-call detector (AIS geofence) | |
| Left HelensburghAIS-detected | Voydar port-call detector (AIS geofence) | |
| Arrived at HelensburghAIS-detected | Voydar port-call detector (AIS geofence) | |
| Left FaslaneAIS-detected | Voydar port-call detector (AIS geofence) | |
| Arrived at FaslaneAIS-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 |
|---|---|---|---|
| Faslane GBFAS | Sep 15, 2026, 15:00 UTC | Sep 16, 2026, 11:23 UTC | 20 h 23 min |
| Helensburgh GBHLN | Sep 8, 2026, 11:53 UTC | Sep 15, 2026, 08:29 UTC | 6 d 20 h |
| Faslane GBFAS | Sep 7, 2026, 09:50 UTC | Sep 8, 2026, 11:51 UTC | 26 h 1 min |
| Faslane GBFAS | Sep 3, 2026, 14:06 UTC | Sep 7, 2026, 08:50 UTC | 3 d 18 h |
| Faslane GBFAS | Jun 26, 2026, 06:52 UTC | Jun 29, 2026, 05:22 UTC | 2 d 22 h |
| Shandon GBSHN | Jun 16, 2026, 09:18 UTC | Jun 24, 2026, 09:38 UTC | 8 d 0 h |
| Faslane GBFAS | Jun 13, 2026, 12:12 UTC | Jun 13, 2026, 13:08 UTC | 56 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 SD Impulse now?
- SD Impulse (Tug, United Kingdom flag) was last seen on AIS on Oct 3, 2026, 03:46 UTC, not moving, near Faslane (North Atlantic Ocean). The crew-entered destination was FASLANE (voyage report via AISstream.io global terrestrial AIS, received Oct 3, 2026, 03:18 UTC). This report does not confirm the ship’s current route.
- What kind of ship is SD Impulse?
- SD Impulse is a tug sailing under the flag of United Kingdom, built in 1993. The vessel is 32 m long with a beam of 10 m and has a gross tonnage of 319.
- What sanctions and inspection records does Voydar hold for SD Impulse?
- Voydar has no matched sanctions record displayed for SD Impulse 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 SD Impulse. Missing records do not establish whether the ship has been detained.
Neighbouring IMO numbers
IMO numbers are issued in sequence. These are the nearest numbers below and above this ship's that have a full Voydar profile.
Use this data
This page is also available as JSON, free, with the source and licence of every section. Sections whose sources do not permit redistribution are listed as withheld.
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