Colin Grazier, GC (7 May 1920 – 30 October 1942) was a sailor in the Royal Navy who was posthumously awarded the George Cross for the "outstanding bravery and steadfast devotion to duty in the face of danger" which he displayed on 30 October 1942 in action in the eastern Mediterranean when capturing codebooks vital for the breaking of the German naval "Shark" Enigma cipher from the sinking German submarine U-559.

The destroyers Pakenham, Petard, Dulverton, Hero, and Hurworth were ordered to proceed from Alexandria to relieve Echo who had been searching for the submarine (which was German U-boat U-559).

The U-boat was caught in Petard's search-lights, and the German crew, with Kapitänleutnant (Captain) Hans Heidtmann, were taken on board under guard, but not before they had opened sea valves and petcocks in order to scuttle the submarine before abandoning it.

The two men were then joined by 16-year-old NAAFI canteen assistant Tommy Brown, and they began the task of searching the rapidly sinking U-boat for any vital documents, code books or machinery.

Able Seaman Colin Grazier, P/SSX.25550 – for outstanding bravery and steadfast devotion to duty in the face of danger.The medal is on display at the National War Museum at Edinburgh Castle.

The sculpture, the work of Polish sculptor Walenty Pytel, takes the form of three anchors, and the date of the unveiling was chosen to coincide with the 60th anniversary of the action against U-559.