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.
Cargo
SIERRA NEVADA HWY
Cargo · last seen 39°N 125°W · Jun 2026 · MMSI 372346000 · Call sign 3EIO4
Not yet on Master's MateType
Cargo
Length
183 m
Beam
31 m
Draft
8.2 m
Call sign
3EIO4
IMO
9325439
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
7
SIERRA NEVADA HWY is an 183-metre cargo vessel. She's built with a beam of 31 m and a 8.2-metre draft. Her papers read MMSI 372346000, call sign 3EIO4, IMO 9325439. It's free to add SIERRA NEVADA HWY to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Free forever · No credit card · for commercial operators
Eyes on SIERRA NEVADA HWY, 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
Live AIS position · Jun 15, 2026 16:21 UTC
Position
38.9377° N, 124.5157° W
Status
Under way (engine)
Speed
15.9 kn
Course
338°
Destination
US PDX
ETA
06-16 21:00 UTC
Wherever SIERRA NEVADA HWY roams, 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 SIERRA NEVADA HWY 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 SIERRA NEVADA HWY and switch it all on
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About SIERRA NEVADA HWY
What kind of vessel is SIERRA NEVADA HWY?
SIERRA NEVADA HWY is a Cargo.
Where was SIERRA NEVADA HWY last seen?
SIERRA NEVADA HWY was last reported in around 39°N 125°W in Jun 2026 on public AIS.
What is SIERRA NEVADA HWY's MMSI?
SIERRA NEVADA HWY's MMSI is 372346000. Call sign 3EIO4. IMO 9325439.
How big is SIERRA NEVADA HWY?
SIERRA NEVADA HWY is about 183 m long, 31 m on the beam, drawing 8.2 m.
Is SIERRA NEVADA HWY on the Master's Mate Safety Initiative Network?
Not yet. If SIERRA NEVADA HWY is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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