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)

CITY SEAL BEACH

MMSI 367056160 · Call sign WDC6421

Not yet on Master's Mate

Type

Passenger (Inspected)

Flag

USA

Length

17.6 m

Beam

6.7 m

Draft

1.4 m

Call sign

WDC6421

Official No.

254898

AIS reports

CITY SEAL BEACH, an American passenger vessel, measures 17.6 metres on deck. She's built with a beam measuring 6.7 metres and a 1.4 m draft. Find her under MMSI 367056160, call sign WDC6421. CITY SEAL BEACH belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.

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

Keep every soul aboard CITY SEAL BEACH 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 CITY SEAL BEACH 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 CITY SEAL BEACH 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 CITY SEAL BEACH and switch it all on

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About CITY SEAL BEACH

What kind of vessel is CITY SEAL BEACH?

CITY SEAL BEACH is a Passenger (Inspected) flagged to United States of America.

What is CITY SEAL BEACH's MMSI?

CITY SEAL BEACH's MMSI is 367056160. Call sign WDC6421.

How big is CITY SEAL BEACH?

CITY SEAL BEACH is about 17.6 m long, 6.7 m on the beam, drawing 1.4 m.

Is CITY SEAL BEACH on the Master's Mate Safety Initiative Network?

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