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.
Search & Rescue
SEQUOIA GUARDIAN
MMSI 338167484
Not yet on Master's MateType
Search & Rescue
Flag
USALength
12 m
Beam
4 m
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
Out of the United States, SEQUOIA GUARDIAN is a 12-metre craft. She carries a 4-metre beam. She's listed under MMSI 338167484. It's free to add SEQUOIA GUARDIAN to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
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Is SEQUOIA GUARDIAN 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.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 13:07 UTC
Position
37.5127° N, 122.1971° W
Speed
0.0 kn
Course
0°
Crossing San Francisco Bay? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put SEQUOIA GUARDIAN 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 SEQUOIA GUARDIAN and switch it all on
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About SEQUOIA GUARDIAN
What kind of vessel is SEQUOIA GUARDIAN?
SEQUOIA GUARDIAN is a Search & Rescue flagged to United States of America.
Where was SEQUOIA GUARDIAN last seen?
SEQUOIA GUARDIAN was last reported in San Francisco Bay in Jun 2026 on public AIS.
What is SEQUOIA GUARDIAN's MMSI?
SEQUOIA GUARDIAN's MMSI is 338167484.
How big is SEQUOIA GUARDIAN?
SEQUOIA GUARDIAN is about 12 m long, 4 m on the beam.
Is SEQUOIA GUARDIAN on the Master's Mate Safety Initiative Network?
Not yet. If SEQUOIA GUARDIAN is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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