Curious, why couldn’t you use a boat to get there if you knew the exact coordinates? Why did you have to charter a plane?,(reply>), Seeing small rocks in large oceans at vaguely defined locations is much easier with a height-of-eye of 150m than &lt;5m.<br>Plus it's almost impossible to accidentally collide with said rock, and sink.<br><br>Clarification - "exact co-ordinates" for maritime stuff, particularly stuff few people are interested in, means "within a mile or two, hopefully"