Superyacht Watch

The public record of superyacht movements

44 m motor yacht · Cook Islands flag

SIRIUS X

Underway last making 0.2 knots. Last signal 5 Sep 2026, 09:31 UTC.

SIRIUS X is a 44 m motor yacht registered under the Cook Islands flag, on the record since 31 Jul 2026. The last 90 days show 1 port call, with the most harbour time at Port de Saint-Tropez, plus 3 spells at anchor in open water.

Map of the last recorded position of SIRIUS X, about 6 km off Port de Saint-Tropez

Last recorded position, about 6 km off Port de Saint-Tropez, rounded to ~100 m, as of 5 Sep 2026, 09:31 UTC. Imagery ©Mapbox ©OpenStreetMap

The last 90 days

JulAugSeptAt anchor (open water), 31 Jul 2026 – 3 Aug 2026 (3 days)At anchor (open water), 22 Aug 2026 – 22 Aug 2026 (2 hours)At anchor (open water), 4 Sep 2026 – 4 Sep 2026 (8 hours)Port de Saint-Tropez, 4 Sep 2026 – 5 Sep 2026 (15 hours)
In portAt anchorGaps: underway or outside the monitored area

Port calls

Saint-Tropez: 1SAINT-TROPEZ
Harbours SIRIUS X has called at on the Côte d’Azur, sized by number of recorded calls.
ArrivedDepartedPlaceTime in port
4 Sep 20265 Sep 2026Port de Saint-Tropez15 hours
4 Sep 20264 Sep 2026At anchor (open water)8 hours
22 Aug 202622 Aug 2026At anchor (open water)2 hours
31 Jul 20263 Aug 2026At anchor (open water)3 days

Movement log

5 Sep 2026

Time (UTC)EventPlace
DepartedPort de Saint-Tropez

4 Sep 2026

Time (UTC)EventPlace
ArrivedPort de Saint-Tropez

22 Aug 2026

Time (UTC)EventPlace
New destinationfor St-Tropez
New destinationfor Tunisia-Bizerte
Reappeared

3 Aug 2026

Time (UTC)EventPlace
New destinationfor Athens

31 Jul 2026

Time (UTC)EventPlace
First recorded

Economic footprint

At 44 m, SIRIUS X represents an estimated €8,500 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
SIRIUS X
Type
Motor Yacht
Length overall
44 m
Beam
8 m
Flag
Cook Islands
MMSI
518159288
IMO
0
Callsign
E5U6172
First recorded
31 Jul 2026
Last signal
5 Sep 2026, 09:31 UTC

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