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.
Mobile Offshore Drilling Unit
SEDCO 703
U.S. Official No. 553910
Not yet on Master's MateType
Mobile Offshore Drilling Unit
Flag
USALength
96.8 m
Beam
74.7 m
Draft
6.2 m
First reported
Jun 2026
AIS reports
1
SEDCO 703, a boat under American registration, measures 96.8 metres on deck. SEDCO 703 has a beam of 74.7 m and a 6.2-metre draft. She's on record as U.S. official number 553910. Add SEDCO 703 to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
Free forever · No credit card
Is SEDCO 703 your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever SEDCO 703 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
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SEDCO 703 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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
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.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim SEDCO 703 and switch it all on
Free to join · nothing to install to start · cancel anytime
About SEDCO 703
What kind of vessel is SEDCO 703?
SEDCO 703 is a Mobile Offshore Drilling Unit flagged to United States of America.
What is SEDCO 703's U.S. Official No.?
SEDCO 703's U.S. Official No. is 553910.
How big is SEDCO 703?
SEDCO 703 is about 96.8 m long, 74.7 m on the beam, drawing 6.2 m.
Is SEDCO 703 on the Master's Mate Safety Initiative Network?
Not yet. If SEDCO 703 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.