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
PERALTA
MMSI 366983830 · Call sign WDB9847
Not yet on Master's MateType
Passenger
Flag
USALength
33 m
Beam
10 m
Draft
3 m
Call sign
WDB9847
IMO
8968260
Official No.
1118810
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
44
PERALTA, a passenger ferry on the the United States registry, measures 33 metres on deck. Below, she has a 10 m beam and a draft of 3 m. Her papers read MMSI 366983830, call sign WDB9847, IMO 8968260. Bring PERALTA aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard PERALTA 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
Last known position · Jun 3, 2026
Position
37.7713° N, 122.2994° W
Sailing San Francisco Bay? 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put PERALTA 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 PERALTA and switch it all on
Free to join · nothing to install to start · cancel anytime
About PERALTA
What kind of vessel is PERALTA?
PERALTA is a Passenger flagged to United States of America.
Where was PERALTA last seen?
PERALTA was last reported in San Francisco Bay in Jun 2026 on public AIS.
What is PERALTA's MMSI?
PERALTA's MMSI is 366983830. Call sign WDB9847. IMO 8968260.
How big is PERALTA?
PERALTA is about 33 m long, 10 m on the beam, drawing 3 m.
Is PERALTA on the Master's Mate Safety Initiative Network?
Not yet. If PERALTA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.