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.

Commercial Fishing Vessel

Sleipnir

MMSI 368122050 · Call sign WDL3483

Not yet on Master's Mate

Type

Commercial Fishing Vessel

Flag

USA

Length

11.9 m

Beam

4.1 m

Draft

2.7 m

Call sign

WDL3483

Official No.

602708

AIS reports

Sleipnir, a fishing trawler sailing under the American flag, measures 11.9 metres on deck. Below, she has a beam of 4.1 m and a draft measuring 2.7 metres. She's listed under MMSI 368122050, call sign WDL3483. The Master's Mate Safety Initiative Network welcomes Sleipnir — free to join, cruiser-run, and always on watch.

Free forever · No credit card · for working captains

Know where the fleet is. Get Sleipnir home safe.

Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.

Keep the fleet in sight — free →

Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers

Wherever Sleipnir 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 working captains

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

Joining the Safety Initiative Network doesn't just put Sleipnir on the map. It hands you the full bridge:

Live AIS & Traffic

See every vessel around you in real time. Closest-approach warnings before they matter.

Weather & Routing

GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.

Systems Monitoring

Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.

Distress Mesh

Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.

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 Sleipnir and switch it all on

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

Claim free → unlock everything

About Sleipnir

What kind of vessel is Sleipnir?

Sleipnir is a Commercial Fishing Vessel flagged to United States of America.

What is Sleipnir's MMSI?

Sleipnir's MMSI is 368122050. Call sign WDL3483.

How big is Sleipnir?

Sleipnir is about 11.9 m long, 4.1 m on the beam, drawing 2.7 m.

Is Sleipnir on the Master's Mate Safety Initiative Network?

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