Superyacht Watch

The public record of superyacht movements

43 m motor yacht · Marshall Islands flag

4US

At anchor in open water since 9 Sep 2026 — 11 hours so far. Last signal 10 Sep 2026, 04:40 UTC.

4US is a 43 m motor yacht registered under the Marshall Islands flag, on the record since 13 Jul 2026. The last 90 days show 2 port calls, with the most harbour time at Porto Cervo, plus 7 spells at anchor in open water.

Map of the last recorded position of 4US, about 2 km off Porto Cervo

Last recorded position, about 2 km off Porto Cervo, rounded to ~100 m, as of 10 Sep 2026, 04:40 UTC. Imagery ©Mapbox ©OpenStreetMap

The last 90 days

JulAugSeptAt anchor (open water), 13 Jul 2026 – 14 Jul 2026 (40 hours)At anchor (open water), 17 Jul 2026 – 18 Jul 2026 (25 hours)At anchor (open water), 18 Jul 2026 – 19 Jul 2026 (17 hours)Porto Cervo, 20 Jul 2026 – 22 Jul 2026 (40 hours)At anchor (open water), 27 Aug 2026 – 6 Sep 2026 (10 days)Cala di Volpe Anchorage, 6 Sep 2026 – 7 Sep 2026 (28 hours)At anchor (open water), 7 Sep 2026 – 9 Sep 2026 (37 hours)At anchor (open water), 9 Sep 2026 – 9 Sep 2026 (7 hours)At anchor (open water), since 9 Sep 2026
In portAt anchorGaps: underway or outside the monitored area

Port calls

Costa Smeralda: 22COSTA SMERALDA
Harbours 4US has called at off Corsica and Sardinia, sized by number of recorded calls.
ArrivedDepartedPlaceTime in port
9 Sep 2026Still at anchorAt anchor (open water)
9 Sep 20269 Sep 2026At anchor (open water)7 hours
7 Sep 20269 Sep 2026At anchor (open water)37 hours
6 Sep 20267 Sep 2026Cala di Volpe Anchorage28 hours
27 Aug 20266 Sep 2026At anchor (open water)10 days
20 Jul 202622 Jul 2026Porto Cervo40 hours
18 Jul 202619 Jul 2026At anchor (open water)17 hours
17 Jul 202618 Jul 2026At anchor (open water)25 hours
13 Jul 202614 Jul 2026At anchor (open water)40 hours

Movement log

9 Sep 2026

Time (UTC)EventPlace
New destinationfor Golfo Pevero
New destinationfor Caladivolpe

7 Sep 2026

Time (UTC)EventPlace
New destinationfor Golfo Pevero
DepartedCala di Volpe Anchorage

6 Sep 2026

Time (UTC)EventPlace
New destinationfor Caladivolpe
ArrivedCala di Volpe Anchorage
New destinationfor Portisco

27 Aug 2026

Time (UTC)EventPlace
Reappeared

4 Aug 2026

Time (UTC)EventPlace
New destinationfor Golfo Pevero

22 Jul 2026

Time (UTC)EventPlace
DepartedPorto Cervo

20 Jul 2026

Time (UTC)EventPlace
ArrivedPorto Cervo

19 Jul 2026

Time (UTC)EventPlace
New destinationfor Porto Cervo

13 Jul 2026

Time (UTC)EventPlace
First recorded

Economic footprint

At 43 m, 4US represents an estimated €8,000 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
4US
Type
Motor Yacht
Length overall
43 m
Beam
8 m
Flag
Marshall Islands
MMSI
538071453
IMO
0
Callsign
V7A2670
First recorded
13 Jul 2026
Last signal
10 Sep 2026, 04:40 UTC

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