FBE MkIII wreckage found

[Dale Carlisle]

Dove the site again today and made note of writing on the sides of the boats.
Each boat has a number; 203 and 91.
Both boats also have the following:

2E/EO 1210
Folding Boat Mk3
4 ESD
Jan 55
RCSME

I figure Jan 55 to be the manufacture date and RCSME to be Royal Canadian School of Military Engineering. I think 4ESD is 4 Engineer Supply Depot. Any ideas as to the rest?

Also found 3 more pins in the silt and solved the question of their function. They hold the load bearing girders to the boats. I saw one in position on the boats. They were connected to the boat by small link chain.

Also found an anchor but am unsure if it is part of the original wreckage or a later snag. Does anyone remember the military using this type of anchor. It is 9.9 lb's and made in Canada.