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

THIS IS THE SEA

U.S. Official No. 984601

Not yet on Master's Mate

Type

Recreational

Flag

USA

Length

13.8 m

Beam

4.6 m

Draft

2.4 m

First reported

Jun 2026

AIS reports

THIS IS THE SEA is a private vessel listed on the the United States registry, spanning 13.8 metres. Below, she has a 4.6-metre beam and a draft measuring 2.4 metres. Find her under U.S. official number 984601. Claim THIS IS THE SEA free and let the Master's Mate Safety Initiative Network keep an eye on her, on the water or off.

Free forever · No credit card · for recreational captains

Keep THIS IS THE SEA 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 THIS IS THE SEA 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 THIS IS THE SEA 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 THIS IS THE SEA and switch it all on

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

Claim free → unlock everything

About THIS IS THE SEA

What kind of vessel is THIS IS THE SEA?

THIS IS THE SEA is a Recreational flagged to United States of America.

What is THIS IS THE SEA's U.S. Official No.?

THIS IS THE SEA's U.S. Official No. is 984601.

How big is THIS IS THE SEA?

THIS IS THE SEA is about 13.8 m long, 4.6 m on the beam, drawing 2.4 m.

Is THIS IS THE SEA on the Master's Mate Safety Initiative Network?

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