don Francisco
Contributor
There are 2 calculations needed here. First the fresh to salt conversion, assuming you'rre neutrally weighted in either is 2.5%, or 1# per 40, of your total weight, including equipment and ballast. You could take your weight, add 2.5% plus 1-1/2-2# for equipment and ballast (60-80#s)
For the wetsuit change, I'd estimate you'll need to shed about 5#s. You can get a better estimate by putting the suit in a mesh bag and experimenting to find out how much weight is needed to sink it. Subtract slightly less than 2/3s of that amount (3mm vs. 1mm). This isn't super precise because the different brands exact thickness vary somewhat, but it'll be close.
Net the 2 adjustments to get a good starting weight, and dial it in on your dives.
BTW- for future reference, find out your weight requirements without any exposure protection, and for your current 3mm suit, and it'll be easier to extrapolate the required weight for different wetsuits. Have a great trip. dF
For the wetsuit change, I'd estimate you'll need to shed about 5#s. You can get a better estimate by putting the suit in a mesh bag and experimenting to find out how much weight is needed to sink it. Subtract slightly less than 2/3s of that amount (3mm vs. 1mm). This isn't super precise because the different brands exact thickness vary somewhat, but it'll be close.
Net the 2 adjustments to get a good starting weight, and dial it in on your dives.
BTW- for future reference, find out your weight requirements without any exposure protection, and for your current 3mm suit, and it'll be easier to extrapolate the required weight for different wetsuits. Have a great trip. dF