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 Barge

RBL 528 B *

U.S. Official No. 505484

Not yet on Master's Mate

Type

Freight Barge

Flag

USA

Length

61 m

Beam

10.7 m

Draft

3.3 m

First reported

Jun 2026

AIS reports

RBL 528 B *, a freight barge under the American flag, measures 61 metres on deck. RBL 528 B * has a 10.7 m beam and a 3.3 m draft. Look for U.S. official number 505484. Add RBL 528 B * to the Master's Mate Safety Initiative Network and share the water with a fleet that's paying attention — free.

Free forever · No credit card · for commercial operators

Eyes on RBL 528 B *, 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 RBL 528 B * 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 RBL 528 B * 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 RBL 528 B * and switch it all on

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

Claim free → unlock everything

About RBL 528 B *

What kind of vessel is RBL 528 B *?

RBL 528 B * is a Freight Barge flagged to United States of America.

What is RBL 528 B *'s U.S. Official No.?

RBL 528 B *'s U.S. Official No. is 505484.

How big is RBL 528 B *?

RBL 528 B * is about 61 m long, 10.7 m on the beam, drawing 3.3 m.

Is RBL 528 B * on the Master's Mate Safety Initiative Network?

Not yet. If RBL 528 B * is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).