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
HUB21
MMSI 533170036 · Call sign 9WLH2
Not yet on Master's MateType
Tug
Flag
MYSLength
30 m
Beam
10 m
Draft
3.2 m
Call sign
9WLH2
IMO
9616333
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
17
Registered in Malaysia, HUB21 is a 30-metre tug. She has a beam measuring 10 metres and a draft measuring 3.2 metres. Look for MMSI 533170036, call sign 9WLH2, IMO 9616333. HUB21 earns her keep on the water; the free Master's Mate Safety Initiative Network keeps a watching fleet and a distress mesh close at hand.
Free forever · No credit card · for working boats
Built for boats that work — like HUB21.
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
Wherever HUB21 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 working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put HUB21 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 HUB21 and switch it all on
Free to join · nothing to install to start · cancel anytime
About HUB21
What kind of vessel is HUB21?
HUB21 is a Tug flagged to Malaysia.
What is HUB21's MMSI?
HUB21's MMSI is 533170036. Call sign 9WLH2. IMO 9616333.
How big is HUB21?
HUB21 is about 30 m long, 10 m on the beam, drawing 3.2 m.
Is HUB21 on the Master's Mate Safety Initiative Network?
Not yet. If HUB21 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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