Changes

Boats Powered boats are becoming more and more like floating mansions. Although built-in vacuums [https://en.wikipedia.org/wiki/Vacuum_cleaner vacuum cleaners] are common ashore, on a boat they represent another set of ductwork passing through [[Bulkheads |watertight bulkheads]]. Several manufacturers (e.g., [https://www.dyson.com/ Dyson], [http://hoover.com/ Hoover]) make very compact models.