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)

California Golden Seal

MMSI 366821960 · Call sign WDA5609

Not yet on Master's Mate

Type

Passenger (Inspected)

Flag

USA

Length

11.9 m

Beam

2.6 m

Draft

1.5 m

Call sign

WDA5609

Official No.

1108509

AIS reports

On the American registry, California Golden Seal is an 11.9-metre passenger boat. California Golden Seal has a beam of 2.6 m and a 1.5 m draft. Her papers read MMSI 366821960, call sign WDA5609. For a boat that carries people, California Golden Seal can lean on the Master's Mate Safety Initiative Network — free distress alerting and a fleet that's paying attention.

Free forever · No credit card · for passenger & charter operators

Keep every soul aboard California Golden Seal 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

Wherever California Golden Seal 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 passenger & charter operators

The most powerful cruising platform ever built — yours, free.

Joining the Safety Initiative Network doesn't just put California Golden Seal 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 California Golden Seal and switch it all on

Free to join · nothing to install to start · cancel anytime

Claim free → unlock everything

About California Golden Seal

What kind of vessel is California Golden Seal?

California Golden Seal is a Passenger (Inspected) flagged to United States of America.

What is California Golden Seal's MMSI?

California Golden Seal's MMSI is 366821960. Call sign WDA5609.

How big is California Golden Seal?

California Golden Seal is about 11.9 m long, 2.6 m on the beam, drawing 1.5 m.

Is California Golden Seal on the Master's Mate Safety Initiative Network?

Not yet. If California Golden Seal is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).