kicking up crud is a total pain, but we’ve done subsea measurements up to 4m range away with the bubbleheads in the water stirring up crud into the laser path and still got to under 3mm accuracy.
cheers for the info lostboy-much obliged! 😀 were they hipap type beacons – and then is the fixed beacon like the one you have on the bottom of the ship ?
do you know what is the longest spool piece job and say average distance involved in a spool piece metrology project?
