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.

Recreational

SAPPHIRE

MMSI 366790280 · Call sign WDA2584

Not yet on Master's Mate

Type

Recreational

Flag

USA

Length

12.7 m

Beam

3.8 m

Draft

3.1 m

Call sign

WDA2584

Official No.

910058

AIS reports

Registered in the United States, SAPPHIRE is a 12.7-metre private cruiser. Below, she has a beam measuring 3.8 metres and a draft measuring 3.1 metres. On AIS she appears as MMSI 366790280, call sign WDA2584. The Master's Mate Safety Initiative Network welcomes SAPPHIRE — free to join, cruiser-run, and always on watch.

Free forever · No credit card · for recreational captains

Keep SAPPHIRE looked after — even when you’re not aboard.

Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.

Look after her — claim free →

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

Wherever SAPPHIRE 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 recreational captains

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

Joining the Safety Initiative Network doesn't just put SAPPHIRE on the map. It hands you the full bridge:

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.

Weather & Routing

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

Worldwide Charts

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

Systems Monitoring

Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.

Live AIS & Traffic

See every vessel around you in real time. Closest-approach warnings before they matter.

Distress Mesh

Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.

Hail Any Captain

A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.

Claim SAPPHIRE and switch it all on

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

Claim free → unlock everything

About SAPPHIRE

What kind of vessel is SAPPHIRE?

SAPPHIRE is a Recreational flagged to United States of America.

What is SAPPHIRE's MMSI?

SAPPHIRE's MMSI is 366790280. Call sign WDA2584.

How big is SAPPHIRE?

SAPPHIRE is about 12.7 m long, 3.8 m on the beam, drawing 3.1 m.

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

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