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.
Cargo
CHESTNUT
MMSI 636018939 · Call sign D5SC9
Not yet on Master's MateType
Cargo
Flag
LBRLength
185 m
Beam
24 m
Draft
6.4 m
Call sign
D5SC9
IMO
9477866
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
19
CHESTNUT is a Liberian merchant vessel — 185 metres overall. She carries a 24 m beam and a 6.4 m draft. Officially she's MMSI 636018939, call sign D5SC9, IMO 9477866. CHESTNUT 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 commercial operators
Eyes on CHESTNUT, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 4, 2026
Position
33.1238° N, 8.6329° W
Wherever CHESTNUT 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 commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put CHESTNUT 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.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
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 CHESTNUT and switch it all on
Free to join · nothing to install to start · cancel anytime
About CHESTNUT
What kind of vessel is CHESTNUT?
CHESTNUT is a Cargo flagged to Liberia.
Where was CHESTNUT last seen?
CHESTNUT was last reported in around 33°N 9°W in Jun 2026 on public AIS.
What is CHESTNUT's MMSI?
CHESTNUT's MMSI is 636018939. Call sign D5SC9. IMO 9477866.
How big is CHESTNUT?
CHESTNUT is about 185 m long, 24 m on the beam, drawing 6.4 m.
Is CHESTNUT on the Master's Mate Safety Initiative Network?
Not yet. If CHESTNUT 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.