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
SIER
MMSI 244710741 · Call sign PG6257
Not yet on Master's MateType
Passenger
Flag
NLDLength
73 m
Beam
15 m
Draft
1.4 m
Call sign
PG6257
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
SIER is a Dutch passenger boat, measuring 73 metres. She carries a beam measuring 15 metres and a 1.4 m draft. She broadcasts as MMSI 244710741, call sign PG6257. SIER 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 SIER 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 08:13 UTC
Position
53.4075° N, 5.8012° E
Status
Under way (engine)
Speed
9.9 kn
Course
17°
Destination
AMELAND-HOLWERT VV
ETA
04-03 04:30 UTC
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 SIER 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 SIER and switch it all on
Free to join · nothing to install to start · cancel anytime
About SIER
What kind of vessel is SIER?
SIER is a Passenger flagged to Netherlands.
Where was SIER last seen?
SIER was last reported in the North Sea in Jun 2026 on public AIS.
What is SIER's MMSI?
SIER's MMSI is 244710741. Call sign PG6257.
How big is SIER?
SIER is about 73 m long, 15 m on the beam, drawing 1.4 m.
Is SIER on the Master's Mate Safety Initiative Network?
Not yet. If SIER 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.