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.

Fishing Tender

Harmony

MMSI 367461320 · Call sign WDF5271

Not yet on Master's Mate

Type

Fishing Tender

Flag

USA

Length

21.5 m

Beam

5.9 m

Draft

2.7 m

Call sign

WDF5271

Official No.

239084

AIS reports

Harmony, a commercial fishing vessel under American registration, measures 21.5 metres on deck. She's built with a beam measuring 5.9 metres and a 2.7-metre draft. Her registration reads MMSI 367461320, call sign WDF5271. Harmony 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 working captains

Know where the fleet is. Get Harmony home safe.

Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.

Keep the fleet in sight — free →

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

Wherever Harmony 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 working captains

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

Joining the Safety Initiative Network doesn't just put Harmony 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.

Weather & Routing

GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.

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.

Anchor Watch

GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.

Worldwide Charts

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

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 Harmony and switch it all on

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

Claim free → unlock everything

About Harmony

What kind of vessel is Harmony?

Harmony is a Fishing Tender flagged to United States of America.

What is Harmony's MMSI?

Harmony's MMSI is 367461320. Call sign WDF5271.

How big is Harmony?

Harmony is about 21.5 m long, 5.9 m on the beam, drawing 2.7 m.

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

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