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.
Port Tender
SIOUX ARROW
MMSI 366973730 · Call sign WAG6168
Not yet on Master's MateType
Port Tender
Flag
USALength
15 m
Beam
5 m
Draft
1.4 m
Call sign
WAG6168
Official No.
537094
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
50
SIOUX ARROW, an utility vessel flying the American flag, measures 15 metres on deck. SIOUX ARROW has a beam measuring 5 metres and a 1.4-metre draft. Find her under MMSI 366973730, call sign WAG6168. SIOUX ARROW can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.
Free forever · No credit card · for working boats
Built for boats that work — like SIOUX ARROW.
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
Last known position · Jun 3, 2026
Position
48.5111° N, 122.6087° W
Working the Salish Sea? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put SIOUX ARROW 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 SIOUX ARROW and switch it all on
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About SIOUX ARROW
What kind of vessel is SIOUX ARROW?
SIOUX ARROW is a Port Tender flagged to United States of America.
Where was SIOUX ARROW last seen?
SIOUX ARROW was last reported in the Salish Sea in Jun 2026 on public AIS.
What is SIOUX ARROW's MMSI?
SIOUX ARROW's MMSI is 366973730. Call sign WAG6168.
How big is SIOUX ARROW?
SIOUX ARROW is about 15 m long, 5 m on the beam, drawing 1.4 m.
Is SIOUX ARROW on the Master's Mate Safety Initiative Network?
Not yet. If SIOUX ARROW is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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