Nigel Calder's "Boatowner's Mechanical and Electrical
Manual" is excellent in those areas. For general coastal seamanship, the older editions of Chapman's Piloting Seamanship and Boat Handling are good, but the most recent (it's up to 60 something editions) is something of a comic book and full of errors - I actually traded mine for an older version. If you get serious about seamanship, download for free (out of copyright) a copy of Bowditch American Practical Navigator. It's the bible of seamanship, and while the celestial navigation
part is probably beyond your needs, "According to Bowditch" still wins lots of arguments. It's two large volumes, but sits in this laptop
as well as on the shelf.