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.
Tug
ROBERT IV
MMSI 367015880 · Call sign WDC3892
Not yet on Master's MateType
Tug
Flag
USALength
17 m
Beam
7 m
Draft
2.5 m
Call sign
WDC3892
Official No.
563841
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
86
Out of the United States, ROBERT IV is a 17-metre working tug. She carries a beam of 7 m and a 2.5-metre draft. On AIS she shows as MMSI 367015880, call sign WDC3892. ROBERT IV belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
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Built for boats that work — like ROBERT IV.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
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Live AIS position · Jun 9, 2026 10:58 UTC
Position
40.5386° N, 74.2532° W
Status
Under way (engine)
Speed
0.0 kn
Course
360°
Destination
NEW YORK HRB
Working off the U.S. East Coast? 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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Joining the Safety Initiative Network doesn't just put ROBERT IV 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 ROBERT IV and switch it all on
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About ROBERT IV
What kind of vessel is ROBERT IV?
ROBERT IV is a Tug flagged to United States of America.
Where was ROBERT IV last seen?
ROBERT IV was last reported in off the U.S. East Coast in Jun 2026 on public AIS.
What is ROBERT IV's MMSI?
ROBERT IV's MMSI is 367015880. Call sign WDC3892.
How big is ROBERT IV?
ROBERT IV is about 17 m long, 7 m on the beam, drawing 2.5 m.
Is ROBERT IV on the Master's Mate Safety Initiative Network?
Not yet. If ROBERT IV is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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