Lieutenant (Royal Navy)

Lieutenant (pronounced "lɛˈtɛnənt" or "lɘ'tɛnɘnt") was a rank in the Military Branch of the British Royal Navy, the most senior before promotion to the rank of Lieutenant Commander.

It was customary for Lieutenants who'd received specialised training to have their specialty indicated by appending a parenthetical initial, such as Lieutenant (G) for a gunner, or Lieutenant (T) for torpedoes.

Regulations

In 1879:

234. To qualify a Midshipman—
(a.) for the rank of Lieutenant,—he must have attained the age of 19 years, and have completed Five years' service in the Royal Navy, including the time awarded to him on leaving the Training Ship.