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
BIG STONE LEADER
MMSI 366665740 · Call sign WSL5754
Not yet on Master's MateType
Passenger
Flag
USALength
35 m
Beam
7 m
Draft
2 m
Call sign
WSL5754
Official No.
596161
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
28
Out of the United States, BIG STONE LEADER is a 35-metre ferry vessel. Her hull carries a beam measuring 7 metres and a draft of 2 m. She's on record as MMSI 366665740, call sign WSL5754. BIG STONE LEADER carries passengers; the free Master's Mate Safety Initiative Network helps carry the watch, with distress alerting and a network nearby.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard BIG STONE LEADER 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
Last known position · Jun 3, 2026
Position
38.0155° N, 76.3613° W
Sailing Chesapeake Bay? 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 BIG STONE LEADER 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 BIG STONE LEADER and switch it all on
Free to join · nothing to install to start · cancel anytime
About BIG STONE LEADER
What kind of vessel is BIG STONE LEADER?
BIG STONE LEADER is a Passenger flagged to United States of America.
Where was BIG STONE LEADER last seen?
BIG STONE LEADER was last reported in Chesapeake Bay in Jun 2026 on public AIS.
What is BIG STONE LEADER's MMSI?
BIG STONE LEADER's MMSI is 366665740. Call sign WSL5754.
How big is BIG STONE LEADER?
BIG STONE LEADER is about 35 m long, 7 m on the beam, drawing 2 m.
Is BIG STONE LEADER on the Master's Mate Safety Initiative Network?
Not yet. If BIG STONE LEADER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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