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)

NATIONAL GEOGRAPHIC SEA LION

MMSI 366396000 · Call sign EX298

Not yet on Master's Mate

Type

Passenger (Inspected)

Flag

USA

Length

41.6 m

Beam

9.4 m

Draft

3.4 m

Call sign

EX298

IMO

8966456

Official No.

648350

AIS reports

NATIONAL GEOGRAPHIC SEA LION is an American 41.6-metre passenger ship. Below, she has a beam measuring 9.4 metres and a draft measuring 3.4 metres. She's listed under MMSI 366396000, call sign EX298, IMO 8966456. NATIONAL GEOGRAPHIC SEA LION carries passengers; the free Master's Mate Safety Initiative Network helps carry the watch, with distress alerting and a network nearby.

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

Keep every soul aboard NATIONAL GEOGRAPHIC SEA LION 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 NATIONAL GEOGRAPHIC SEA LION 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 NATIONAL GEOGRAPHIC SEA LION 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 NATIONAL GEOGRAPHIC SEA LION and switch it all on

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About NATIONAL GEOGRAPHIC SEA LION

What kind of vessel is NATIONAL GEOGRAPHIC SEA LION?

NATIONAL GEOGRAPHIC SEA LION is a Passenger (Inspected) flagged to United States of America.

What is NATIONAL GEOGRAPHIC SEA LION's MMSI?

NATIONAL GEOGRAPHIC SEA LION's MMSI is 366396000. Call sign EX298. IMO 8966456.

How big is NATIONAL GEOGRAPHIC SEA LION?

NATIONAL GEOGRAPHIC SEA LION is about 41.6 m long, 9.4 m on the beam, drawing 3.4 m.

Is NATIONAL GEOGRAPHIC SEA LION on the Master's Mate Safety Initiative Network?

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