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.

Industrial Vessel

HERON

MMSI 366992190 · Call sign WBK6871

Not yet on Master's Mate

Type

Industrial Vessel

Flag

USA

Length

10.9 m

Beam

4.5 m

Draft

1.2 m

Call sign

WBK6871

Official No.

970613

AIS reports

HERON, a commercial ship registered in the United States, measures 10.9 metres on deck. She's built with 4.5 metres in the beam and a 1.2 m draft. Find her under MMSI 366992190, call sign WBK6871. HERON can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.

Free forever · No credit card · for commercial operators

Eyes on HERON, 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 HERON 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 HERON 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 HERON and switch it all on

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

Claim free → unlock everything

About HERON

What kind of vessel is HERON?

HERON is a Industrial Vessel flagged to United States of America.

What is HERON's MMSI?

HERON's MMSI is 366992190. Call sign WBK6871.

How big is HERON?

HERON is about 10.9 m long, 4.5 m on the beam, drawing 1.2 m.

Is HERON on the Master's Mate Safety Initiative Network?

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