HMS Ocean, pennant number L12, is one of the Royal Navy’s amphibious assault ship and sole landing platform helicopter (LPH).
It is designed to transport troops and equipment and then put them ashore using either helicopters (she can support all current UK Military helicopter types) or the 4 embarked Landing Craft Vehicle Personnel (LCVP) as well as having loading ramps that can be used whilst in port.
HMS Ocean had previously visited London on two occasions in 2012 as part of the Olympic Games security measures and has recently undergone maintenance prior to assuming the role as the Royal Navy’s Flagship and this visit was in part to help commemorate the 70th anniversary of Victory in Europe day.
The ship had taken part in the recent Joint Warrior exercise off Scotland and was return to her homeport via a port visit to her affiliated city of Sunderland and London.
On this occasion two helicopters were on board , both being Sea King ASaC7 AEW helicopters.
On the Sunday HMS Ocean was open to visitors who were able to see inside her helicopter hanger and to go up on to the flight deck where one of the Sea Kings and an LCVP were open for inspection.
As with all Navy vessels HMS Ocean is equipped with a number of weapons systems for close-in defence (her primary protection would come from other vessels in the Task Force) which includes four 30mm Mark 44 Bushmaster II cannon (as also fitted to HMS Middleton) plus three Phalanx CIWS mounts.
Whilst moored in Greenwich she was being looked after by both the Ministry of Defence Police in their launch Endeavour and also the Metropolitan Police.
A few more pictures can be seen here.