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.

Vessel

STL H5

MMSI 563034090

Not yet on Master's Mate

Flag

SGP

Length

68.4 m

IMO

9763538

AIS reports

STL H5, a craft sailing under the Singaporean flag, measures 68.4 metres on deck. Find her under MMSI 563034090, IMO 9763538. STL H5 is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.

Free forever · No credit card

Is STL H5 your boat?

Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.

Claim this boat — free →

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

Wherever STL H5 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

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

Joining the Safety Initiative Network doesn't just put STL H5 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.

Worldwide Charts

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

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.

Onboard Cameras

Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.

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.

Hail Any Captain

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

Claim STL H5 and switch it all on

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

Claim free → unlock everything

About STL H5

What kind of vessel is STL H5?

STL H5 is a vessel flagged to Singapore.

What is STL H5's MMSI?

STL H5's MMSI is 563034090. IMO 9763538.

How big is STL H5?

STL H5 is about 68.4 m long.

Is STL H5 on the Master's Mate Safety Initiative Network?

Not yet. If STL H5 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).