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
VIVIAN B
MMSI 367556370 · Call sign WDG6380
Not yet on Master's MateType
Tug
Flag
USALength
22 m
Beam
10 m
Draft
2.8 m
Call sign
WDG6380
IMO
8976621
Official No.
1132915
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
28
VIVIAN B is an American 22-metre tugboat. VIVIAN B has a 10 m beam and a 2.8 m draft. On the registers she's MMSI 367556370, call sign WDG6380, IMO 8976621. Add VIVIAN B to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
Free forever · No credit card · for working boats
Built for boats that work — like VIVIAN B.
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 18:06 UTC
Position
37.9024° N, 87.5451° W
Status
Pushing ahead
Speed
0.7 kn
Course
289°
Wherever VIVIAN 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.
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 VIVIAN B 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 VIVIAN B and switch it all on
Free to join · nothing to install to start · cancel anytime
About VIVIAN B
What kind of vessel is VIVIAN B?
VIVIAN B is a Tug flagged to United States of America.
Where was VIVIAN B last seen?
VIVIAN B was last reported in around 38°N 88°W in Jun 2026 on public AIS.
What is VIVIAN B's MMSI?
VIVIAN B's MMSI is 367556370. Call sign WDG6380. IMO 8976621.
How big is VIVIAN B?
VIVIAN B is about 22 m long, 10 m on the beam, drawing 2.8 m.
Is VIVIAN B on the Master's Mate Safety Initiative Network?
Not yet. If VIVIAN B is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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