The Free Boating Encyclopedia

Definitions   Guidelines   Resources
Forms   Databases   Blogs   Profiles

About   Link   Translate   Contact

— WikiLinks —

Automatic Identification System - Definition
Vessel Finder - MMSI Search

— WikiTags —

MMSI Website - FCC
MMSI Application and Information - Boat US



The nation's premier boat history report with a full compliment of title search resources. Includes eight maritime databases all rolled into one convenient interface. A must-have service for any prospective buyer, marine lender, or maritime professional.

Visit Now


Owner Background Search

Criminal Records
Assets - Properties
Personal Details

Know your seller!

Sponsored by


Maritime Mobile Service Identities


BoatWiki - Definitions


Mar 22, 2023 - Maritime Mobile Service Identities (MMSI) are used to identify a ship, yacht, or coast radio station. These are nine-digit numbers used by automatic identification systems located on the vessel or site involved. MMSIs are managed by the International Telecommunications Union in Geneva, Switzerland.

MMSIs are regulated in a manner similar to radio call signs.


Although mostly utilized by seagoing ships, MMSIs may also apply to larger offshore yachts.


MMSIs are of little consequence to the typical boater, but may prove helpful in tracking yachts that employ such systems.

BoatWiki is your website and it's completely free of charge.
Please assist fellow boaters by wiki-sharing any comments or experiences related to this subject.

Credits and References

Mar 22, 2023 - Page revised.



Float Your BoatWiki

Learn about the role you can play
in supporting the internet's most reliable
source of free boating information.


Stay informed about urgent matters of
boater fraud and the latest changes in
 boat registration or safety regulations.



A Division of Maritime Partners, LLC
State of Washington  USA
© Copyright 1998 - 2024 All rights reserved.

boatwiki boatwiki

About   Link   Translate   Terms   Privacy   Contact