HMS 
                    L24 was a British L class submarine built by Vickers, Barrow-in-Furness. 
                    She was laid down on 13th February 1919 and was commissioned 
                    later. She was sunk in a collision with the battleship HMS 
                    Resolution during an exercise off Portland Bill in the 
                    English Channel on 10 January 1924. The crew were lost. A 
                    memorial is located in St Ann's Church in HMNB Portsmouth 
                    on the south wall of the nave, above the most Easterly window.
                  
                     
                      | To 
                          the memory ofTHE OFFICERS AND MEN
 of His Majesty's Submarine
 L.24.
 LOST BY COLLISION WITH
 HMS RESOLUTION WHEN SUBMERGED
 10 Miles 221 degrees FROM PORTLAND BILL
 on the 10th January 1924
 | 
                  
                  Details
                  HMS 
                    L24 was detailed to take part in Exercise GA in January 1924, 
                    which was intended to improve submarine tactics in dealing 
                    with aircraft, both friendly and hostile. On 10th January 
                    HMS Resolution, a 29,000-ton 
                    battleship, left Portland bound for the exercise. After several 
                    hours at sea a lookout on board the Resolution reported a 
                    disturbance on the surface ahead and at 1113 a slight bump 
                    was felt. L24 was shortly afterwards reported missing and 
                    salvage vessels were dispatched to the area.
                  Unfortunately 
                    night soon fell and the weather the next day prevented any 
                    further search and by the 12th all hope of finding survivors 
                    had to be given up. The Resolution was checked for evidence 
                    of a collision, her chain was found to be fractured at the 
                    very bottom and this was taken as evidence of a collision. 
                    It is believed that L24 was unaware of the Resolution’s 
                    position having carried out a mock attack on another ship 
                    and was surfacing when she suddenly became aware of the looming 
                    battleship. A crash dive was probably attempted but L24 was 
                    unable to avoid the battleship.
                  [Details, 
                    and further details availabe, from Wikipedia 
                    HMS L24 and Submarine 
                    Losses 1904 to present day]
                  
                  TO 
                    THE GLORY OF GOD AND TO THE IMPERISHABLE MEMORY OF THE 43
                    OFFICERS AND MEN OF H.M. SUBMARINE L.24 LOST OFF PORTLAND 
                    JANY 10TH 1924