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.

Freight Ship

Black Seal

MMSI 367470820 · Call sign WDF6116

Not yet on Master's Mate

Type

Freight Ship

Flag

USA

Length

20.2 m

Beam

6 m

Draft

2.8 m

Call sign

WDF6116

Official No.

1176023

AIS reports

Out of the United States, Black Seal is a 20.2-metre freighter. Her hull carries a beam of 6 m and a draft of 2.8 m. She broadcasts as MMSI 367470820, call sign WDF6116. Sign Black Seal up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.

Free forever · No credit card · for commercial operators

Eyes on Black Seal, around the clock.

Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.

Put her on the dashboard — free →

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

Wherever Black Seal 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 commercial operators

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

Joining the Safety Initiative Network doesn't just put Black Seal 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.

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.

Worldwide Charts

Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.

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.

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 Black Seal and switch it all on

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

Claim free → unlock everything

About Black Seal

What kind of vessel is Black Seal?

Black Seal is a Freight Ship flagged to United States of America.

What is Black Seal's MMSI?

Black Seal's MMSI is 367470820. Call sign WDF6116.

How big is Black Seal?

Black Seal is about 20.2 m long, 6 m on the beam, drawing 2.8 m.

Is Black Seal on the Master's Mate Safety Initiative Network?

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