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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.
Wing-in-ground
SP4BSI
MMSI 525100534 · Call sign YBME2
Not yet on Master's MateType
Wing-in-ground
Flag
IDNLength
85 m
Beam
17 m
Draft
4.1 m
Call sign
YBME2
IMO
9755983
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
78
SP4BSI is a craft hailing from Indonesia, 85 metres long. Below, she has a beam measuring 17 metres and a draft of 4.1 m. She's on record as MMSI 525100534, call sign YBME2, IMO 9755983. Add SP4BSI to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
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Last known position · Jun 3, 2026
Position
6.1014° S, 106.9536° E
Wherever SP4BSI roams, you're never out there alone.
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Joining the Safety Initiative Network doesn't just put SP4BSI on the map. It hands you the full bridge:
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.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
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.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
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About SP4BSI
What kind of vessel is SP4BSI?
SP4BSI is a Wing-in-ground flagged to Indonesia.
Where was SP4BSI last seen?
SP4BSI was last reported in around 6°S 107°E in Jun 2026 on public AIS.
What is SP4BSI's MMSI?
SP4BSI's MMSI is 525100534. Call sign YBME2. IMO 9755983.
How big is SP4BSI?
SP4BSI is about 85 m long, 17 m on the beam, drawing 4.1 m.
Is SP4BSI on the Master's Mate Safety Initiative Network?
Not yet. If SP4BSI is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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