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.
Towing
ALTA JUNE
MMSI 367369720 · Call sign WDE5645
Not yet on Master's MateType
Towing
Flag
USALength
23 m
Beam
10 m
Draft
1.8 m
Call sign
WDE5645
IMO
9552290
Official No.
1211684
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
86
ALTA JUNE, an American utility vessel, measures 23 metres on deck. She's built with a 10-metre beam and a 1.8-metre draft. She broadcasts as MMSI 367369720, call sign WDE5645, IMO 9552290. ALTA JUNE 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 working boats
Built for boats that work — like ALTA JUNE.
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
Live AIS position · Jun 9, 2026 11:42 UTC
Position
37.9224° N, 122.4089° W
Status
Under way (engine)
Speed
0.0 kn
Course
42°
Destination
SFO HARBOR OPS
Working San Francisco Bay? 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 ALTA JUNE 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 ALTA JUNE and switch it all on
Free to join · nothing to install to start · cancel anytime
About ALTA JUNE
What kind of vessel is ALTA JUNE?
ALTA JUNE is a Towing flagged to United States of America.
Where was ALTA JUNE last seen?
ALTA JUNE was last reported in San Francisco Bay in Jun 2026 on public AIS.
What is ALTA JUNE's MMSI?
ALTA JUNE's MMSI is 367369720. Call sign WDE5645. IMO 9552290.
How big is ALTA JUNE?
ALTA JUNE is about 23 m long, 10 m on the beam, drawing 1.8 m.
Is ALTA JUNE on the Master's Mate Safety Initiative Network?
Not yet. If ALTA JUNE 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.