Four ships of the Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 have borne the name HMS Trusty:
was an Aetna class ironclad floating battery

Aetna class ironclad floating battery

The Aetna-class ironclad floating batteries were built during the Crimean War for the attack of Russian coastal fortifications.Britain and France each laid down five of these coastal attack vessels in 1854. The French used three of their batteries in 1855 against the defences at Kinburn on the...

 launched in 1855 and broken up in 1864. It was the first turret ship

Turret ship

Turret ships were a 19th century type of warship, the earliest to have their guns mounted in a revolving gun turret, instead of a broadside arrangement....

. was a tug launched in 1866, renamed in 1917 as HMS Trustful and broken up in 1920. was an S-class destroyer launched in 1918 and broken up in 1936. was an T-class submarine launched in 1941 and broken up in 1947.