Visited ONONDAGA in Halifax, NS in 2000. Great boats the OBERONS... if you're not over 5-ft 8 inches! You are very aware of the overhead throughout most of the boat, except for the engine room and and forward torpedo room. They are the most numerous sub class on display next to the Gato-Balaos in the USA.
I had a chance to talk with some of the enlisted men who were preparing her for exhibit in Ottawa. They were sad that it was being removed from service, but I explained to them that it would live forever (or almost) as a memorial sub. I also prodded them not to take away items that the future curator would have a hard time replacing. Walked passed the storage batteries on the pier.
The original plan was to cut her into three segments and barge them to Ottawa where they would be reassembled at the war museum. For some reason that plan failed. Now it is in Romulanski (Sp?)... basically no where near major population centers. But it is Canada's only sub memorial. There are three other OBERONs available, OJIBWA, OKANOGAN, and OLYMPUS, so Montreal could get one as well as Toronto, and maybe Vancouver, BC. But don't hold your breath. The typical Canadian is not very interested in their colorful naval history, sadly.
I will have to dig out my pics of Onandaga.