If you go to the Rideau Nautical Modellers site there are maps showing the location.
Saturday June 16, 2007
The location is Andrew Haydon Park in Ottawa on Carling Ave. You exit off the 417 on Acres Road. Turn left (North) and it will take you right to the park.
The event will start at 10:00am with a BBQ at noon and probably wrap up around 4:00 pm.
While in town you could take in the National War Musuem not far from the site. They have a neat WWII mini sub on display.
Check out these shots of last years event.
It's not having what you want. It's wanting what you've got.