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

INTERSTATE 138

U.S. Official No. 611433

Not yet on Master's Mate

Type

Tank Barge

Flag

USA

Length

119.3 m

Beam

20.8 m

Draft

11.9 m

First reported

Jun 2026

AIS reports

INTERSTATE 138 is an American tank vessel, 119.3 metres in length. She's built with a 20.8-metre beam and a 11.9 m draft. Look for U.S. official number 611433. Give INTERSTATE 138 the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

Free forever · No credit card · for commercial operators

Eyes on INTERSTATE 138, 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 INTERSTATE 138 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 INTERSTATE 138 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 INTERSTATE 138 and switch it all on

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

Claim free → unlock everything

About INTERSTATE 138

What kind of vessel is INTERSTATE 138?

INTERSTATE 138 is a Tank Barge flagged to United States of America.

What is INTERSTATE 138's U.S. Official No.?

INTERSTATE 138's U.S. Official No. is 611433.

How big is INTERSTATE 138?

INTERSTATE 138 is about 119.3 m long, 20.8 m on the beam, drawing 11.9 m.

Is INTERSTATE 138 on the Master's Mate Safety Initiative Network?

Not yet. If INTERSTATE 138 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).