top of page
Writer's pictureSi Biggs

RM Engineers - LCOCU's (Landing Craft Obstruction Clearance Units)

Updated: May 30, 2024

ON D-DAY,  six Royal Marine and four Royal Navy LCOCUs, Landing Craft Obstruction Clearance Units [LCOCUs pronounced Lock-yews] each comprising an officer and 11 men, were deployed from LCAs from H-Hour. 


LCOCUs (3, 4 RN), 9 and 10 were assigned to Gold Beach (Force G), 7 and 8 to Sword (Force S), and (1, 5 RN), 11 and 12 to Juno (Force J). 


Operating from inflatable boats, they were responsible for clearing obstructions in depths between 3m and 1.4m, while the Royal Engineers had the job of clearing shallower areas and the beach itself.

Original concept was to dive on teh obstacles to clear them, but this was abandoned due to rough seas and congested lanes

They were all intended to clear paths through beach obstacles, but owing to the conditions of the tide and dangers from incoming craft the men were unable to use their shallow water diving gear, but nevertheless cleared obstacles. 

The original concept of operations was to dive on the obstacles from LCA Mother craft to clear them, however due to rough seas and congested lanes this was abandoned and obstacles were cleared by more traditional methods

Despite coming under artillery and mortar fire and being shot at, the LCOCUs succeeded in clearing thousand-yard-wide gaps in the offshore defences before helping the Royal Engineers with their tasks. By the end of the day, they had cleared 2500 obstacles at the cost of Acting Leading Seaman Allister Austin (LCOCU 3) being killed and several other divers wounded, some seriously.

Royal Marine Commando Engineers prepare to demolish Czech hedgehogs om a Normandy beach designed to prevent an Allied forces landing.

For “gallantry, skill, determination and undaunted devotion to duty during the initial landings on the coast of Normandy”, Lieutenants Robert Billington, Harold Hargreaves and John Taylor of the Royal Naval Volunteer Reserve were awarded the Distinguished Service Cross. Lt David Cogger RM was awarded the Military Cross. 


Royal Marine Sergeants Keith Briggs and Peter Jones, Petty Officers Sydney Eagles and George Lock, Leading Seaman Frank Livingstone and Marine Eric Deans were awarded the Distinguished Service Medal.


Related Royal Marines 'Dits'


248 views0 comments

Recent Posts

See All

Comments


bottom of page