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

S.L.I.M.

MMSI 368386590 · Call sign WDP7978

Not yet on Master's Mate

Type

Commercial Fishing Vessel

Flag

USA

Length

11 m

Beam

4 m

Draft

2 m

Call sign

WDP7978

Official No.

1221318

AIS reports

S.L.I.M. flies the American flag — an 11-metre working fishing boat. S.L.I.M. has a beam measuring 4 metres and a 2-metre draft. On the registers she's MMSI 368386590, call sign WDP7978. Give S.L.I.M. the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

Free forever · No credit card · for working captains

Know where the fleet is. Get S.L.I.M. 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 S.L.I.M. 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 S.L.I.M. 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 S.L.I.M. and switch it all on

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

Claim free → unlock everything

About S.L.I.M.

What kind of vessel is S.L.I.M.?

S.L.I.M. is a Commercial Fishing Vessel flagged to United States of America.

What is S.L.I.M.'s MMSI?

S.L.I.M.'s MMSI is 368386590. Call sign WDP7978.

How big is S.L.I.M.?

S.L.I.M. is about 11 m long, 4 m on the beam, drawing 2 m.

Is S.L.I.M. on the Master's Mate Safety Initiative Network?

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