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

Hammer Down

MMSI 368062420 · Call sign WDK5177

Not yet on Master's Mate

Type

Commercial Fishing Vessel

Flag

USA

Length

14.3 m

Beam

5.7 m

Draft

1.5 m

Call sign

WDK5177

Official No.

1289847

Hull ID

ESBS47020417

AIS reports

An American working fishing boat, Hammer Down measures 14.3 metres. Hammer Down has a beam measuring 5.7 metres and a 1.5-metre draft. She's listed under MMSI 368062420, call sign WDK5177. Hammer Down belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.

Free forever · No credit card · for working captains

Know where the fleet is. Get Hammer Down 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 Hammer Down 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 Hammer Down 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 Hammer Down and switch it all on

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About Hammer Down

What kind of vessel is Hammer Down?

Hammer Down is a Commercial Fishing Vessel flagged to United States of America.

What is Hammer Down's MMSI?

Hammer Down's MMSI is 368062420. Call sign WDK5177.

How big is Hammer Down?

Hammer Down is about 14.3 m long, 5.7 m on the beam, drawing 1.5 m.

Is Hammer Down on the Master's Mate Safety Initiative Network?

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