Can't confirm it on direct personal evidence, but I have been told by several knowledgeable people in the field that Canada maintains some kind of an underground sub base near the south end of Vancouver island, that is accessed underwater by the subs.
I once had occasion to be out with my father one night on his boat and went below while he was piloting, when I got a call from my brother that "some kind of BIG military ship is coming up fast flashing all kinds of lights"...well I ran topside just in time to see them fire some kind of tracer type shell across our bow at which point I grabbed the wheel and did about a 130degree to port and hit the throttles
Not exactly sure of where we were (this was many many years ago) but I remember checking the chart a bit later and seeing an "area restricted, do not enter" type designation at that location on the chart. Guess they were serious about it too
I know for a fact that Gibralter has some amazing things under that rock
soo its not entirely impossible for something interesting in an about Hawaii
In any event, some of the detail on the google earth stuff is amazing, which reminds me...do all Aussie women on boats go topless? hehehehe
seer