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 SPIRIT II

MMSI 366948140 · Call sign WDB7793

Not yet on Master's Mate

Type

Passenger (Inspected)

Flag

USA

Length

16.2 m

Beam

4.9 m

Draft

1.8 m

Call sign

WDB7793

Official No.

620273

Hull ID

KBDYDW280480

AIS reports

Out of the United States, SEA SPIRIT II is a 16.2-metre excursion vessel. She's built with 4.9 metres in the beam and a 1.8-metre draft. Her papers read MMSI 366948140, call sign WDB7793. SEA SPIRIT II is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.

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

Keep every soul aboard SEA SPIRIT II 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 SEA SPIRIT II 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 SEA SPIRIT II 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 SPIRIT II and switch it all on

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Claim free → unlock everything

About SEA SPIRIT II

What kind of vessel is SEA SPIRIT II?

SEA SPIRIT II is a Passenger (Inspected) flagged to United States of America.

What is SEA SPIRIT II's MMSI?

SEA SPIRIT II's MMSI is 366948140. Call sign WDB7793.

How big is SEA SPIRIT II?

SEA SPIRIT II is about 16.2 m long, 4.9 m on the beam, drawing 1.8 m.

Is SEA SPIRIT II on the Master's Mate Safety Initiative Network?

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