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 OTTER V

MMSI 366890340 · Call sign WDB3701

Not yet on Master's Mate

Type

Passenger (Inspected)

Flag

USA

Length

19.5 m

Beam

6.1 m

Draft

3 m

Call sign

WDB3701

Official No.

1139835

Hull ID

PMI65001D103

AIS reports

SEA OTTER V is a passenger vessel flying the American flag, 19.5 metres in length. She carries a beam measuring 6.1 metres and a 3 m draft. On the registers she's MMSI 366890340, call sign WDB3701. Bring SEA OTTER V 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 SEA OTTER V 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 OTTER V 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 OTTER V 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 OTTER V and switch it all on

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

Claim free → unlock everything

About SEA OTTER V

What kind of vessel is SEA OTTER V?

SEA OTTER V is a Passenger (Inspected) flagged to United States of America.

What is SEA OTTER V's MMSI?

SEA OTTER V's MMSI is 366890340. Call sign WDB3701.

How big is SEA OTTER V?

SEA OTTER V is about 19.5 m long, 6.1 m on the beam, drawing 3 m.

Is SEA OTTER V on the Master's Mate Safety Initiative Network?

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