Cruise Johnstone Strait,
Johnstone Strait is the main route through the maze of islands between, Vancouver Island and the mainland coasts of British Columbia and Washington State. Captain George Vancouver first charted this area in 1792 and named the strait in honour of James Johnstone, the Master of the accompanying survey ship the HMS Chatham. The scenery is of a rugged beauty with steep walls, tumbling waterfalls and snow-capped mountain. There are only a few scattered settlements, but there is abundant marine and bird wildlife. At the southern end lies the Seymour Narrows, a famous stretch of water where tidal currents reach amazing speeds of 16 knots. It is only half a mile wide and 2 miles long, but the treacherous currents, swirling eddies and rips have claimed both ships and lives. The major hazard used to be a large rock called Ripple Rock that lay just beneath the water’s surface in the middle of the channel. In 1958 they made several attempts to blast the rock. Finally, it took 1,400 tons of explosives to demolish the top 40 feet of the rock. It was, up to that date, the largest non-nuclear explosion in the world.