3 ms·
Gate off the water for the canal separate from the sea, so that it doesn't fluctuate. Usually this involves building a set of locks so that ships can traverse b
by ThrustVectoring 10y ago
Gate off the water for the canal separate from the sea, so that it doesn't fluctuate. Usually this involves building a set of locks so that ships can traverse between the different levels - basically, a pair of floodgates with mechanisms to drain water into and out of the pound between them. Push ship in, lock the near gate, drain or fill the pound, unlock other end.
- arethuza 10y agoSo it's a dock that is open at both ends and has a stone roof?
- ThrustVectoring 10y agoDocks are shoreside structures used for mooring vessels. It's basically an artificial lake inside an artificial cave.
- avar 10y agoNo, that's not how it's going to work. This proposed tunnel has no locks, the tunnel is open to the ocean on both ends.
- ThrustVectoring 10y agoYou sure? 100 ships a day means 14 minutes per ship, and a lock cycle takes 10-20 minutes, so that's awfully suggestive to me. OTOH, I'm not sure of the relative difficulty and expense of adding height to a tunnel vs creating and operating a lock - I'd assume at some length it makes more sense to use a lock, since tunnel cost scales with length and lock cost doesn't.
- avar 10y agoI don't know why the limit is 100 per day, I'm just going by the article & the pictures in it which very clearly show a tunnel open to the ocean with no lock system. The photos also show a mountain going straight into the ocean, which means raising the ship with a lock wouldn't save you any money, since you'd need an unbroken sequence of locks going all the way to the top of the mountain.
- ThrustVectoring 10y agoIt'd save money by reducing the height of the tunnel you need to bore.