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.
Oil Recovery
Royal Tern
MMSI 367147690 · Call sign WDD4659
Not yet on Master's MateType
Oil Recovery
Flag
USALength
21.8 m
Beam
6.1 m
Draft
2.8 m
Call sign
WDD4659
Official No.
970612
AIS reports
1
An American commercial vessel, Royal Tern measures 21.8 metres. Royal Tern has a beam measuring 6.1 metres and a 2.8 m draft. Find her under MMSI 367147690, call sign WDD4659. There's a place for Royal Tern on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
Free forever · No credit card · for commercial operators
Eyes on Royal Tern, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Royal Tern 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 commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Royal Tern on the map. It hands you the full bridge:
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
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 Royal Tern and switch it all on
Free to join · nothing to install to start · cancel anytime
About Royal Tern
What kind of vessel is Royal Tern?
Royal Tern is a Oil Recovery flagged to United States of America.
What is Royal Tern's MMSI?
Royal Tern's MMSI is 367147690. Call sign WDD4659.
How big is Royal Tern?
Royal Tern is about 21.8 m long, 6.1 m on the beam, drawing 2.8 m.
Is Royal Tern on the Master's Mate Safety Initiative Network?
Not yet. If Royal Tern is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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