I've have a Sea Breath unit for about a year and used it about a dozen times. Happy so far.
Single Diver Deck Unit [130-D] - $1,395.00*USD : Sea Breathe, The Electric Snorkel
I got it on the last day of a boat show
for a good price
after talking to the vendor for quite a while. As with everything in life there are trade-offs. This little 12v pump isn't going to provide much air down deep but I've found it completely adequate down to 20ft or so. I really don't have much desire to go deeper. The advantage of the little power efficient pump is that a battery
lasts longer than you're going to want to swim (e.g. an hour plus for me). I purchased an extension hose - not to go deeper but to allow a greater distance from the pump.
I was impressed with the quality of the hoses, regulator
, etc. After a year, nothing has rusted or looks ratty. A great advantage of this unit is that it's easy to store. The pump is the size of a fishing
tacklebox. The biggest piece is the mesh bag holding the coiled hoses but it stuffs well into a corner of the bilge
I've found it easy to use from the dinghy
for sightseeing. I simply anchor
and move the anchor
along the bottom as I swim.
A final benefit is that I decided to power it with Optima 48 amp-hour AGM battery
that weighs only 36lbs. This not only runs the pump for a really long time but is able to start my boat's diesel
(with jumpers) should all other battery banks somehow die - of course, that could never happen
. Since the Optima doesn't self discharge significantly, it just sits in a corner of the bilge
disconnected from the electric
I've been a certified (but infrequent) diver for 30 years. You should certainly get some training as it's quite possible to kill yourself with this stuff. But at the shallow depths involved (well under one atmosphere) the number of ways you can get in trouble are greatly reduced. Breath out when surfacing.
To the OP. I would just buy a cheap
230 -> 12v auto battery charger
and not worry about trying to use 24v.