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.

Tank Barge

DBL 104

MMSI 368237930 · Call sign WDM7857

Not yet on Master's Mate

Type

Tank Barge

Flag

USA

Length

116.2 m

Beam

22.6 m

Draft

7.6 m

Call sign

WDM7857

Official No.

1193787

AIS reports

On the American registry, DBL 104 is an 116.2-metre tank ship. She has a 22.6 m beam and a draft measuring 7.6 metres. On AIS she appears as MMSI 368237930, call sign WDM7857. DBL 104 can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.

Free forever · No credit card · for commercial operators

Eyes on DBL 104, 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 DBL 104 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 DBL 104 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 DBL 104 and switch it all on

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

Claim free → unlock everything

About DBL 104

What kind of vessel is DBL 104?

DBL 104 is a Tank Barge flagged to United States of America.

What is DBL 104's MMSI?

DBL 104's MMSI is 368237930. Call sign WDM7857.

How big is DBL 104?

DBL 104 is about 116.2 m long, 22.6 m on the beam, drawing 7.6 m.

Is DBL 104 on the Master's Mate Safety Initiative Network?

Not yet. If DBL 104 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).