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.
Towing
STEPHEN B
MMSI 367645150 · Call sign WDH7135
Not yet on Master's MateType
Towing
Flag
USALength
86 m
Beam
7 m
Draft
3.1 m
Call sign
WDH7135
IMO
50
Official No.
656371
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
84
STEPHEN B, a working vessel wearing American colours, measures 86 metres on deck. She has a 7-metre beam and a draft measuring 3.1 metres. She's on record as MMSI 367645150, call sign WDH7135. STEPHEN B earns her keep on the water; the free Master's Mate Safety Initiative Network keeps a watching fleet and a distress mesh close at hand.
Free forever · No credit card · for working boats
Built for boats that work — like STEPHEN B.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 08:29 UTC
Position
40.8034° N, 73.8243° W
Status
Under way (engine)
Speed
8.8 kn
Course
80°
Destination
CARTERET NJ
ETA
03-13 11:46 UTC
Working Long Island Sound? 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 boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put STEPHEN B on the map. It hands you the full bridge:
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.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
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 STEPHEN B and switch it all on
Free to join · nothing to install to start · cancel anytime
About STEPHEN B
What kind of vessel is STEPHEN B?
STEPHEN B is a Towing flagged to United States of America.
Where was STEPHEN B last seen?
STEPHEN B was last reported in Long Island Sound in Jun 2026 on public AIS.
What is STEPHEN B's MMSI?
STEPHEN B's MMSI is 367645150. Call sign WDH7135. IMO 50.
How big is STEPHEN B?
STEPHEN B is about 86 m long, 7 m on the beam, drawing 3.1 m.
Is STEPHEN B on the Master's Mate Safety Initiative Network?
Not yet. If STEPHEN B is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.