Royal Canadian Navy : HMCS Cornwallis, Crusader Division, 1952.

Many thanks to George Morrison (Cdr.-Ret), for this photo of Crusader Division (Aug.-Dec., 1952). He says this was the first intake of technical apprentices. He remembers a few of the names:
Back Row (L-R): Johnson, UNKNOWN, UNKNOWN, UNKNOWN, UNKNOWN, UNKNOWN, UNKNOWN, UNKNOWN, UNKNOWN, Pattison, McCort(?).
5th Row (L-R): UNKNOWN, UNKNOWN, UNKNOWN, Stevens, Howe, UNKNOWN, Rees, UNKNOWN, Hutchison, Allen.
4th Row (L-R): UNKNOWN, UNKNOWN, UNKNOWN, Spanik, UNKNOWN, UNKNOWN, UNKNOWN, Harrison, UNKNOWN.
3rd Row (L-R): UNKNOWN, UNKNOWN, UNKNOWN, UNKNOWN, George Morrison, UNKNOWN, Schwager.
2nd Row (L-R): Brownless, UNKNOWN, UNKNOWN, Murchy, UNKNOWN, UNKNOWN, UNKNOWN, Spence.
Front Row (L-R): McKendry, Jones, LS Ken MacIntosh, C2 Tom Davis, Lt Frank MacIntosh, LS Spence, UNKNOWN, Blackhurst.

The occasion of this photo seems to be the winning of the "Cock Of The Walk" trophy.