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.
Freight Ship
R. J. PFEIFFER
MMSI 366576000 · Call sign WRJP
Not yet on Master's MateType
Freight Ship
Flag
USALength
204.7 m
Beam
32.2 m
Draft
20.3 m
Call sign
WRJP
IMO
9002037
Official No.
979814
AIS reports
1
On the American registry, R. J. PFEIFFER is a 204.7-metre merchant ship. She has a beam measuring 32.2 metres and a draft measuring 20.3 metres. On AIS she shows as MMSI 366576000, call sign WRJP, IMO 9002037. The Master's Mate Safety Initiative Network welcomes R. J. PFEIFFER — free to join, cruiser-run, and always on watch.
Free forever · No credit card · for commercial operators
Eyes on R. J. PFEIFFER, 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
Wherever R. J. PFEIFFER 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 commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put R. J. PFEIFFER 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 R. J. PFEIFFER and switch it all on
Free to join · nothing to install to start · cancel anytime
About R. J. PFEIFFER
What kind of vessel is R. J. PFEIFFER?
R. J. PFEIFFER is a Freight Ship flagged to United States of America.
What is R. J. PFEIFFER's MMSI?
R. J. PFEIFFER's MMSI is 366576000. Call sign WRJP. IMO 9002037.
How big is R. J. PFEIFFER?
R. J. PFEIFFER is about 204.7 m long, 32.2 m on the beam, drawing 20.3 m.
Is R. J. PFEIFFER on the Master's Mate Safety Initiative Network?
Not yet. If R. J. PFEIFFER 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.