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.
Offshore Supply Vessel
GOL Diamond
MMSI 303071000 · Call sign WDJ7559
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
53.2 m
Beam
14.6 m
Draft
4.9 m
Call sign
WDJ7559
IMO
9514547
Official No.
554355
AIS reports
3
An American working craft, GOL Diamond measures 53.2 metres. Her hull carries a 14.6 m beam and a draft of 4.9 m. Find her under MMSI 303071000, call sign WDJ7559, IMO 9514547. GOL Diamond 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 GOL Diamond.
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
Wherever GOL Diamond roams, 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 working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put GOL Diamond 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 GOL Diamond and switch it all on
Free to join · nothing to install to start · cancel anytime
About GOL Diamond
What kind of vessel is GOL Diamond?
GOL Diamond is a Offshore Supply Vessel flagged to United States of America.
What is GOL Diamond's MMSI?
GOL Diamond's MMSI is 303071000. Call sign WDJ7559. IMO 9514547.
How big is GOL Diamond?
GOL Diamond is about 53.2 m long, 14.6 m on the beam, drawing 4.9 m.
Is GOL Diamond on the Master's Mate Safety Initiative Network?
Not yet. If GOL Diamond is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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