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
GROTTE
MMSI 219029233 · Call sign OYSR
Not yet on Master's MateType
Passenger
Flag
DNKLength
50 m
Beam
12 m
Call sign
OYSR
IMO
9909429
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
Registered in Denmark, GROTTE is a 50-metre ferry vessel. She has a beam measuring 12 metres. Officially she's MMSI 219029233, call sign OYSR, IMO 9909429. For a boat that carries people, GROTTE can lean on the Master's Mate Safety Initiative Network — free distress alerting and a fleet that's paying attention.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard GROTTE 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
Live AIS position · Jun 9, 2026 09:32 UTC
Position
55.4536° N, 8.4129° E
Speed
7.4 kn
Course
28°
Sailing the North Sea? 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 GROTTE 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 GROTTE and switch it all on
Free to join · nothing to install to start · cancel anytime
About GROTTE
What kind of vessel is GROTTE?
GROTTE is a Passenger flagged to Denmark.
Where was GROTTE last seen?
GROTTE was last reported in the North Sea in Jun 2026 on public AIS.
What is GROTTE's MMSI?
GROTTE's MMSI is 219029233. Call sign OYSR. IMO 9909429.
How big is GROTTE?
GROTTE is about 50 m long, 12 m on the beam.
Is GROTTE on the Master's Mate Safety Initiative Network?
Not yet. If GROTTE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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