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.
Tug
SPERWER 1
MMSI 244620809 · Call sign PA3321
Not yet on Master's MateType
Tug
Flag
NLDLength
17 m
Beam
4 m
Draft
2 m
Call sign
PA3321
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
SPERWER 1 is a working tug registered in the Netherlands, 17 metres from stem to stern. She's built with a 4 m beam and a 2-metre draft. Her papers read MMSI 244620809, call sign PA3321. SPERWER 1 can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Free forever · No credit card · for working boats
Built for boats that work — like SPERWER 1.
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 13:21 UTC
Position
51.7968° N, 5.3547° E
Status
Moored
Speed
0.0 kn
Course
360°
Destination
ROSSUM
ETA
01-01 00:00 UTC
Working 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.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SPERWER 1 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 SPERWER 1 and switch it all on
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About SPERWER 1
What kind of vessel is SPERWER 1?
SPERWER 1 is a Tug flagged to Netherlands.
Where was SPERWER 1 last seen?
SPERWER 1 was last reported in the North Sea in Jun 2026 on public AIS.
What is SPERWER 1's MMSI?
SPERWER 1's MMSI is 244620809. Call sign PA3321.
How big is SPERWER 1?
SPERWER 1 is about 17 m long, 4 m on the beam, drawing 2 m.
Is SPERWER 1 on the Master's Mate Safety Initiative Network?
Not yet. If SPERWER 1 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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