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.
Recreational
High Slack
MMSI 367314970 · Call sign WDL9316
Not yet on Master's MateType
Recreational
Flag
USALength
13.3 m
Beam
4.8 m
Draft
2.4 m
Call sign
WDL9316
Official No.
1201986
AIS reports
2
High Slack flies the American flag — a 13.3-metre private cruiser. Below, she has a beam of 4.8 m and a draft of 2.4 m. On AIS she shows as MMSI 367314970, call sign WDL9316. There's a place for High Slack on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
Free forever · No credit card · for recreational captains
Keep High Slack looked after — even when you’re not aboard.
Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.
Look after her — claim free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 11:27 UTC
Position
50.1177° N, 124.7100° W
Status
Under way (engine)
Speed
0.0 kn
Course
317°
Wherever High Slack 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 recreational captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put High Slack on the map. It hands you the full bridge:
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.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim High Slack and switch it all on
Free to join · nothing to install to start · cancel anytime
About High Slack
What kind of vessel is High Slack?
High Slack is a Recreational flagged to United States of America.
What is High Slack's MMSI?
High Slack's MMSI is 367314970. Call sign WDL9316.
How big is High Slack?
High Slack is about 13.3 m long, 4.8 m on the beam, drawing 2.4 m.
Is High Slack on the Master's Mate Safety Initiative Network?
Not yet. If High Slack is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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