How to breathe underwater
Frustrated by the difficulty in checking and cleaning underwater when unable or unwilling to haul out, I investigated the underwater breathing equipment on the market. Although I am a qualified BSAC diver, I am reluctant to carry tanks and the paraphernalia involved. My solution works well up to a depth of 3m, which is all I need. I have spent hours burnishing the propeller and removing barnacles in the Caribbean, and with a wet suit in home waters.
I use a Hozelock pond aerator pump, a filter, some hose and a snorkel (the type which can be ‘purged’), which has been modified to take a Hozelock hose connection.
The inverter runs the pump, the hose I use for filling tanks and washing decks. It’s probably frowned upon by the diving establishment, but it works for me. I have not had to use it for cutting rope from the prop but it would be invaluable in that situation too.