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.
Passenger (Inspected)
Henry Longfellow
MMSI 367470540 · Call sign WDF6091
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
19.5 m
Beam
4.7 m
Draft
1.4 m
Call sign
WDF6091
Official No.
1040105
AIS reports
1
On the American registry, Henry Longfellow is a 19.5-metre passenger craft. Her hull carries a beam of 4.7 m and a draft measuring 1.4 metres. Her papers read MMSI 367470540, call sign WDF6091. Keep every soul aboard Henry Longfellow covered with the free Master's Mate Safety Initiative Network.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard Henry Longfellow safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Henry Longfellow 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Henry Longfellow on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
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 Henry Longfellow and switch it all on
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About Henry Longfellow
What kind of vessel is Henry Longfellow?
Henry Longfellow is a Passenger (Inspected) flagged to United States of America.
What is Henry Longfellow's MMSI?
Henry Longfellow's MMSI is 367470540. Call sign WDF6091.
How big is Henry Longfellow?
Henry Longfellow is about 19.5 m long, 4.7 m on the beam, drawing 1.4 m.
Is Henry Longfellow on the Master's Mate Safety Initiative Network?
Not yet. If Henry Longfellow is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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