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)
MARINER II
MMSI 368034740 · Call sign WDK2355
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
12.2 m
Beam
3.8 m
Draft
1.7 m
Call sign
WDK2355
Official No.
1136800
Hull ID
THC40026E202
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
15
MARINER II is an American excursion vessel, 12.2 metres from stem to stern. She's built with a 3.8-metre beam and a 1.7-metre draft. Officially she's MMSI 368034740, call sign WDK2355. MARINER II 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 passenger & charter operators
Keep every soul aboard MARINER II safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
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Live AIS position · Jun 9, 2026 14:30 UTC
Position
41.9562° N, 87.6234° W
Status
Under way (engine)
Speed
18.8 kn
Course
346°
Sailing Lake Michigan? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put MARINER II 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 MARINER II and switch it all on
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About MARINER II
What kind of vessel is MARINER II?
MARINER II is a Passenger (Inspected) flagged to United States of America.
Where was MARINER II last seen?
MARINER II was last reported in Lake Michigan in Jun 2026 on public AIS.
What is MARINER II's MMSI?
MARINER II's MMSI is 368034740. Call sign WDK2355.
How big is MARINER II?
MARINER II is about 12.2 m long, 3.8 m on the beam, drawing 1.7 m.
Is MARINER II on the Master's Mate Safety Initiative Network?
Not yet. If MARINER II is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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