We had a very quick and fine run till we were in the latitude of Loo-Choo.  A gale then sprung up--rather unusual, I believe, at that season of the year.  It lasted two days.  When the weather cleared, we saw a huge, lumbering thing tumbling about at the distance of three or four miles from us.  It looked, as Fleming the gunner remarked, "like a Martello tower adrift."