Superyacht Watch

The public record of superyacht movements

33 m motor yacht · United Kingdom flag

M4

Outside the monitored area — no signal since 6 Oct 2026. Last signal 6 Oct 2026, 06:45 UTC.

M4 is a 33 m motor yacht registered under the United Kingdom flag, on the record since 21 Jul 2026. The last 90 days show 1 port call, with the most harbour time at Port de Bonifacio, plus 10 spells at anchor in open water.

The last 90 days

AugSeptOctAt anchor (open water), 21 Jul 2026 – 24 Jul 2026 (2 days)At anchor (open water), 30 Jul 2026 – 21 Aug 2026 (22 days)At anchor (open water), 24 Aug 2026 – 26 Aug 2026 (2 days)At anchor (open water), 26 Aug 2026 – 29 Aug 2026 (3 days)At anchor (open water), 29 Aug 2026 – 29 Aug 2026 (86 minutes)At anchor (open water), 6 Sep 2026 – 8 Sep 2026 (45 hours)At anchor (open water), 11 Sep 2026 – 2 Oct 2026 (21 days)At anchor (open water), 2 Oct 2026 – 3 Oct 2026 (13 hours)At anchor (open water), 3 Oct 2026 – 4 Oct 2026 (25 hours)At anchor (open water), 4 Oct 2026 – 4 Oct 2026 (7 hours)Port de Bonifacio, 4 Oct 2026 – 5 Oct 2026 (16 hours)
In portAt anchorGaps: underway or outside the monitored area

Port calls

Bonifacio: 1BONIFACIO
Harbours M4 has called at off Corsica and Sardinia, sized by number of recorded calls.
ArrivedDepartedPlaceTime in port
4 Oct 20265 Oct 2026Port de Bonifacio16 hours
4 Oct 20264 Oct 2026At anchor (open water)7 hours
3 Oct 20264 Oct 2026At anchor (open water)25 hours
2 Oct 20263 Oct 2026At anchor (open water)13 hours
11 Sep 20262 Oct 2026At anchor (open water)21 days
6 Sep 20268 Sep 2026At anchor (open water)45 hours
29 Aug 202629 Aug 2026At anchor (open water)84 minutes
26 Aug 202629 Aug 2026At anchor (open water)3 days
24 Aug 202626 Aug 2026At anchor (open water)2 days
30 Jul 202621 Aug 2026At anchor (open water)22 days
21 Jul 202624 Jul 2026At anchor (open water)3 days

Movement log

5 Oct 2026

Time (UTC)EventPlace
DepartedPort de Bonifacio

4 Oct 2026

Time (UTC)EventPlace
ArrivedPort de Bonifacio

2 Oct 2026

Time (UTC)EventPlace
Reappeared—

6 Sep 2026

Time (UTC)EventPlace
New destinationfor Porto Raphael

29 Aug 2026

Time (UTC)EventPlace
New destinationfor Porto Rafael

26 Aug 2026

Time (UTC)EventPlace
New destinationfor Mallorca

24 Aug 2026

Time (UTC)EventPlace
New destinationfor Ibiza

21 Jul 2026

Time (UTC)EventPlace
First recorded—

Economic footprint

At 33 m, M4 represents an estimated €3,600 a day in running spend — crew, berthing, fuel, maintenance and provisioning — much of it landing wherever the yacht is lying. An order-of-magnitude estimate, not an account: how it is derived.

Registry particulars

Name
M4
Type
Motor Yacht
Length overall
33 m
Beam
9 m
Flag
United Kingdom
MMSI
235006459
IMO
0
Callsign
ZIUV8
First recorded
21 Jul 2026
Last signal
6 Oct 2026, 06:45 UTC

Particulars as broadcast over AIS; dimensions are the transmitted hull values. Vessel operators: see the privacy & takedown policy.