Desperate last minute efforts being made at Portland to find M2 before time limit of safety for her crew expires . It is now feared that there is no hope of rescuing the crew of the ill fated submarine M2 which dived to the bottom of the English Channel , off Portland , Dorset , with sixty men aboard . Desperate attempts to locate her before the time limit of safety for her crew expires have so far proved unavailing . Coastguardsmen semaphoring to rescue patrol boats from the station at Portland . 28 January 1932