I bought the Nantucket sounder many years ago from the Wooden Boat store and I think it is a nice piece to have and use. But I want to tell a story with a smile about depthsounders in former days of sailing vessels:
From and old Groninger skipper (Groningen is province in the north-east of the Netherlands which skippers were famous for there sea voyages) was said that he could taste from the ground that came above with the sounder where they were. When a new cook became part of the crew he didn't believe it and one night when the skipper was sleeping and the cook was on watch he wanted to try the story. So when it was time to wake the skipper for the ground proof, the cook wrapped the sounder with grease through the box with potatoes and went to the skipper. The skipper -still half asleep- tasted, tasted again and -fully awake- shouted: 'Delfzijl has dissapeared we 're sailing above Kraayma's field....' (Delfzijl is a harbour in the north-eastern part of the Netherlands).