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.

Passenger (Inspected)

Grande Mariner

MMSI 368363680 · Call sign WDP5465

Not yet on Master's Mate

Type

Passenger (Inspected)

Flag

USA

Length

44.7 m

Beam

11.9 m

Draft

3 m

Call sign

WDP5465

Official No.

1066911

AIS reports

Grande Mariner is an American passenger craft, spanning 44.7 metres. She has a 11.9 m beam and a draft measuring 3 metres. Her registration reads MMSI 368363680, call sign WDP5465. Give Grande Mariner the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

Free forever · No credit card · for passenger & charter operators

Keep every soul aboard Grande Mariner safe.

Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.

Switch on the safety stack — free →

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

Wherever Grande Mariner 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 passenger & charter operators

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

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

Distress Mesh

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

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.

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.

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 Grande Mariner and switch it all on

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

Claim free → unlock everything

About Grande Mariner

What kind of vessel is Grande Mariner?

Grande Mariner is a Passenger (Inspected) flagged to United States of America.

What is Grande Mariner's MMSI?

Grande Mariner's MMSI is 368363680. Call sign WDP5465.

How big is Grande Mariner?

Grande Mariner is about 44.7 m long, 11.9 m on the beam, drawing 3 m.

Is Grande Mariner on the Master's Mate Safety Initiative Network?

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