CONVERSIONS (APPROXIMATE)
Miles to kilometers	=	multiply by 8/5
Kilometers to miles	=	multiply by 5/8
tatute miles to nautical miles	=	deduct 1/8
Pounds per square inch (psi) to atmospheres	=	divide by 14.7
Atmospheres or bars to kilos per square centimeter	=	nearly the same
Water depth (feet) to bars absolute	=	divide by 33 and add 1 bar
Water depth (meters) to bars absolute	=	divide by 10 and add 1 bar
Bars absolute to feet of water depth	=	substract 1 bar and multiply by 33
Bars absolute to meters of water depth	=	substract 1 bar and muliply by 10