Master's MateSafety Initiative Network
The Master's Mate Safety Initiative Network (MMSIn) — like AAA for the ocean, but free & community-driven. Cruisers keeping each other safe: anchor-drag & distress alerts, a verified captains directory, and a watch network that has your back.
Passenger
SAPPHIRE OF LONDON
Passenger · last seen 51°N 0°E · Jun 2026 · MMSI 232051929 · Call sign MONU6
Not yet on Master's MateType
Passenger
Length
26 m
Beam
5 m
Call sign
MONU6
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
7
SAPPHIRE OF LONDON is a 26-metre passenger vessel. SAPPHIRE OF LONDON has a 5 m beam. Her registration reads MMSI 232051929, call sign MONU6. SAPPHIRE OF LONDON carries passengers; the free Master's Mate Safety Initiative Network helps carry the watch, with distress alerting and a network nearby.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard SAPPHIRE OF LONDON safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 15, 2026 17:19 UTC
Position
51.4903° N, 0.1256° W
Speed
0.1 kn
Course
360°
Sailing the North Sea? You're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
Free with your claim · for passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SAPPHIRE OF LONDON on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim SAPPHIRE OF LONDON and switch it all on
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About SAPPHIRE OF LONDON
What kind of vessel is SAPPHIRE OF LONDON?
SAPPHIRE OF LONDON is a Passenger.
Where was SAPPHIRE OF LONDON last seen?
SAPPHIRE OF LONDON was last reported in the North Sea in Jun 2026 on public AIS.
What is SAPPHIRE OF LONDON's MMSI?
SAPPHIRE OF LONDON's MMSI is 232051929. Call sign MONU6.
How big is SAPPHIRE OF LONDON?
SAPPHIRE OF LONDON is about 26 m long, 5 m on the beam.
Is SAPPHIRE OF LONDON on the Master's Mate Safety Initiative Network?
Not yet. If SAPPHIRE OF LONDON is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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