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.
Tank Ship
Stena Imperative
MMSI 310686000 · Call sign WSIY
Not yet on Master's MateType
Tank Ship
Flag
BMULength
183 m
Beam
32.2 m
Draft
18.2 m
Call sign
WSIY
IMO
9666077
Official No.
1337203
AIS reports
2
Stena Imperative is a tank ship listed on the Bermuda registry, measuring 183 metres. Stena Imperative has a 32.2-metre beam and a 18.2 m draft. On AIS she shows as MMSI 310686000, call sign WSIY, IMO 9666077. Put Stena Imperative on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for commercial operators
Eyes on Stena Imperative, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Stena Imperative 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 commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Stena Imperative on the map. It hands you the full bridge:
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
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 Stena Imperative and switch it all on
Free to join · nothing to install to start · cancel anytime
About Stena Imperative
What kind of vessel is Stena Imperative?
Stena Imperative is a Tank Ship flagged to Bermuda.
What is Stena Imperative's MMSI?
Stena Imperative's MMSI is 310686000. Call sign WSIY. IMO 9666077.
How big is Stena Imperative?
Stena Imperative is about 183 m long, 32.2 m on the beam, drawing 18.2 m.
Is Stena Imperative on the Master's Mate Safety Initiative Network?
Not yet. If Stena Imperative is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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