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.
Tug
SB13
MMSI 244130359 · Call sign PH5316
Not yet on Master's MateType
Tug
Flag
NLDLength
15 m
Beam
5 m
Call sign
PH5316
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
Out of the Netherlands, SB13 is a 15-metre working tug. She's built with a beam measuring 5 metres. Find her under MMSI 244130359, call sign PH5316. SB13 is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for working boats
Built for boats that work — like SB13.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 07:44 UTC
Position
52.3283° N, 4.9230° E
Status
Under way (engine)
Speed
0.0 kn
Course
360°
Destination
AMSTERDAM
Working 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.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SB13 on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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 SB13 and switch it all on
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About SB13
What kind of vessel is SB13?
SB13 is a Tug flagged to Netherlands.
Where was SB13 last seen?
SB13 was last reported in the North Sea in Jun 2026 on public AIS.
What is SB13's MMSI?
SB13's MMSI is 244130359. Call sign PH5316.
How big is SB13?
SB13 is about 15 m long, 5 m on the beam.
Is SB13 on the Master's Mate Safety Initiative Network?
Not yet. If SB13 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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