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.
Passenger (Inspected)
SEA LION
MMSI 338191000 · Call sign WDH5547
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
18.9 m
Beam
9.1 m
Draft
2.4 m
Call sign
WDH5547
Official No.
1089463
Hull ID
GC62CDC01199
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
43
An American passenger vessel, SEA LION measures 18.9 metres. She carries a beam measuring 9.1 metres and a 2.4 m draft. She's on record as MMSI 338191000, call sign WDH5547. Give SEA LION the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard SEA LION safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 22:07 UTC
Position
48.6883° N, 123.1907° W
Status
Under way (engine)
Speed
15.7 kn
Course
99°
Sailing the Salish 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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Joining the Safety Initiative Network doesn't just put SEA LION on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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.
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.
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 SEA LION and switch it all on
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About SEA LION
What kind of vessel is SEA LION?
SEA LION is a Passenger (Inspected) flagged to United States of America.
Where was SEA LION last seen?
SEA LION was last reported in the Salish Sea in Jun 2026 on public AIS.
What is SEA LION's MMSI?
SEA LION's MMSI is 338191000. Call sign WDH5547.
How big is SEA LION?
SEA LION is about 18.9 m long, 9.1 m on the beam, drawing 2.4 m.
Is SEA LION on the Master's Mate Safety Initiative Network?
Not yet. If SEA LION is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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