Actually the rule is that if they were fully just over water they would be ok to not wear a harness but due to there being a platform beneath their working area OSHA would require harnesses with connections made to ceiling or a guide line installed for working at those heights. This is also true if you are between 2 boats for work as they are still seen as more dangerous.
But open water in a boom lift? Yeah, no harness needed.
Actually the rule is that if they were fully just over water they would be ok to not wear a harness but due to there being a platform beneath their working area OSHA would require harnesses with connections made to ceiling or a guide line installed for working at those heights. This is also true if you are between 2 boats for work as they are still seen as more dangerous.
But open water in a boom lift? Yeah, no harness needed.
I was also thinking strapped to the ceiling would be the safest