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

SILENT THUNDER

U.S. Official No. 989873

Not yet on Master's Mate

Type

Recreational

Flag

USA

Length

8.3 m

Beam

2.5 m

Draft

1.8 m

First reported

Jun 2026

AIS reports

SILENT THUNDER, a family boat flying the American flag, measures 8.3 metres on deck. She carries 2.5 metres in the beam and a 1.8-metre draft. She's on record as U.S. official number 989873. Whether she's at the dock or out for the weekend, SILENT THUNDER is covered by the free Master's Mate Safety Initiative Network — alarms, weather, and a watching fleet.

Free forever · No credit card · for recreational captains

Keep SILENT THUNDER 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 SILENT THUNDER 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 SILENT THUNDER 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 SILENT THUNDER and switch it all on

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

Claim free → unlock everything

About SILENT THUNDER

What kind of vessel is SILENT THUNDER?

SILENT THUNDER is a Recreational flagged to United States of America.

What is SILENT THUNDER's U.S. Official No.?

SILENT THUNDER's U.S. Official No. is 989873.

How big is SILENT THUNDER?

SILENT THUNDER is about 8.3 m long, 2.5 m on the beam, drawing 1.8 m.

Is SILENT THUNDER on the Master's Mate Safety Initiative Network?

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