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.
Vessel
ROBERTA B
MMSI 636026131 · Call sign A8LH4
Not yet on Master's MateFlag
LBRLength
330 m
Beam
60 m
Draft
11 m
Call sign
A8LH4
IMO
9563237
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
28
ROBERTA B, a vessel flagged in Liberia, measures 330 metres on deck. ROBERTA B has a beam measuring 60 metres and a 11 m draft. Find her under MMSI 636026131, call sign A8LH4, IMO 9563237. Join ROBERTA B to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
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Is ROBERTA B your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
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Last known position · Jun 4, 2026
Position
35.1075° N, 8.3516° W
Wherever ROBERTA B roams, 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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Joining the Safety Initiative Network doesn't just put ROBERTA B on the map. It hands you the full bridge:
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.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim ROBERTA B and switch it all on
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About ROBERTA B
What kind of vessel is ROBERTA B?
ROBERTA B is a vessel flagged to Liberia.
Where was ROBERTA B last seen?
ROBERTA B was last reported in around 35°N 8°W in Jun 2026 on public AIS.
What is ROBERTA B's MMSI?
ROBERTA B's MMSI is 636026131. Call sign A8LH4. IMO 9563237.
How big is ROBERTA B?
ROBERTA B is about 330 m long, 60 m on the beam, drawing 11 m.
Is ROBERTA B on the Master's Mate Safety Initiative Network?
Not yet. If ROBERTA B is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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