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.

Commercial Fishing Vessel

X-CALIBER

MMSI 367651930 · Call sign WDH7817

Not yet on Master's Mate

Type

Commercial Fishing Vessel

Flag

USA

Length

13.4 m

Beam

4.7 m

Draft

1.8 m

Call sign

WDH7817

Official No.

626296

AIS reports

X-CALIBER, an American fishing trawler, measures 13.4 metres on deck. She has a beam measuring 4.7 metres and a draft measuring 1.8 metres. Look for MMSI 367651930, call sign WDH7817. X-CALIBER can join the Master's Mate Safety Initiative Network free, for live AIS, weather, and a network of boats ready to help when it counts.

Free forever · No credit card · for working captains

Know where the fleet is. Get X-CALIBER 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 X-CALIBER 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 X-CALIBER 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 X-CALIBER and switch it all on

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

Claim free → unlock everything

About X-CALIBER

What kind of vessel is X-CALIBER?

X-CALIBER is a Commercial Fishing Vessel flagged to United States of America.

What is X-CALIBER's MMSI?

X-CALIBER's MMSI is 367651930. Call sign WDH7817.

How big is X-CALIBER?

X-CALIBER is about 13.4 m long, 4.7 m on the beam, drawing 1.8 m.

Is X-CALIBER on the Master's Mate Safety Initiative Network?

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