Ship statutory certificates can be found in the official documentation for each vessel. They have great importance as they track the origin and nationality of each ship.
Importance of watch engine of the ship?
Mother Ship - 2008 is rated/received certificates of: USA:G
This Little Ship - 1953 is rated/received certificates of: UK:U
Ship to Shore - 1993 is rated/received certificates of: Australia:G
The Ship That Died - 1938 is rated/received certificates of: USA:Approved
To save your life if the ship sinks!
Ghost Ship - 1952 is rated/received certificates of: USA:Approved (PCA #16520)
Hell-Ship Morgan - 1936 is rated/received certificates of: USA:Approved
Devil Ship - 1947 is rated/received certificates of: USA:Approved (PCA #12611)
Ship of Theseus - 2012 is rated/received certificates of: India:U/A Singapore:NC-16
Jumping Ship - 2001 TV is rated/received certificates of: USA:TV-G
Slave Ship - 1937 is rated/received certificates of: Finland:K-16 USA:Approved (PCA #3047)