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.
Passenger (Inspected)
INFRANGIBLE
U.S. Official No. 274832
Not yet on Master's Mate
Type
Passenger (Inspected)
Flag
USA
Length
15.2 m
Beam
3.4 m
Draft
1 m
First reported
Jun 2026
AIS reports
1
INFRANGIBLE is an American ferry — 15.2 metres overall. She carries a beam of 3.4 m and a 1-metre draft. She's listed under U.S. official number 274832. INFRANGIBLE is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard INFRANGIBLE safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.