Now then, the tides aren't strong in the Pacific, and if you can't unballast the Nautilus, which seems impossible to me, I don't see how it will float off.

一般说，太平洋的潮水是不高的，如果您不把诺第留斯号浮起—看这是不可的—那就看不到它有什么法子，够离开暗礁，重回大海。