What is this?

[EdH]

I found this in an old boat house (100 year old cottage).

Any ideas on who made this, age etc. I am including pictures of the numbers stamped inside.
Length: 16 feet
Width: 32 inches

Cedar planked with copper nails.

 

[Dan Miller]

It's a Peterborough Canoe Company Champlain model (model number 1492). This model was offered roughly from 1943 to 1956.