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.

Law Enforcement

CGC WILLIAM CHADWICK

MMSI 338926450 · Call sign NWMC

Not yet on Master's Mate

Type

Law Enforcement

Flag

USA

Length

46 m

Beam

7 m

Draft

3 m

Call sign

NWMC

First reported

Jun 2026

Last reported

Jun 2026

AIS reports

CGC WILLIAM CHADWICK is an American vessel, 46 metres from stem to stern. She carries a 7-metre beam and a 3-metre draft. Officially she's MMSI 338926450, call sign NWMC. CGC WILLIAM CHADWICK can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.

Free forever · No credit card

Is CGC WILLIAM CHADWICK 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

Live AIS position · Jun 9, 2026 22:25 UTC

Track CGC WILLIAM CHADWICK live — sign up free →

Position

42.3691° N, 71.0514° W

Status

Moored

Speed

0.0 kn

Course

203°

Destination

BOSTON

ETA

06-03 16:00 UTC

Crossing the Gulf of Maine? 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 CGC WILLIAM CHADWICK 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 CGC WILLIAM CHADWICK and switch it all on

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

Claim free → unlock everything

About CGC WILLIAM CHADWICK

What kind of vessel is CGC WILLIAM CHADWICK?

CGC WILLIAM CHADWICK is a Law Enforcement flagged to United States of America.

Where was CGC WILLIAM CHADWICK last seen?

CGC WILLIAM CHADWICK was last reported in the Gulf of Maine in Jun 2026 on public AIS.

What is CGC WILLIAM CHADWICK's MMSI?

CGC WILLIAM CHADWICK's MMSI is 338926450. Call sign NWMC.

How big is CGC WILLIAM CHADWICK?

CGC WILLIAM CHADWICK is about 46 m long, 7 m on the beam, drawing 3 m.

Is CGC WILLIAM CHADWICK on the Master's Mate Safety Initiative Network?

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