Canadian Coast Guard
Explains purpose and services. Includes boating safety tips, marine notices, and other resource pages. In French and English.
DFT - Shipping
Information from the UK Department for Transport on maritime regulation and safety matters.
Marine Accident Investigation Branch
Provides information on the work of the MAIB, which is responsible for investigating all types of marine accidents, both to ships and to people on board them.
Sim Software
A small software development company focusing on marine navigation and safety. Free program.