Are you comfortable on a guided dive when no one
remains on the boat above? Well, Cayman dive operators
don’t want to foot the extra expense of keeping a lookout
topside.
For 25 years, a Port Authority Law regulation has been
  on the books, stating: “At least one person shall remain on
  board and act as lookout on any dive boat … whilst divers
  there from are down.” It had been rarely enforced until dive
  operators recently announced they wanted to change the
  rule, calling it outdated. Now marine officials are starting to
  enforce it, setting up a battle.
Stephen Broadbelt, co-founder of dive shop Ocean
  Frontiers and chairman of the Cayman Watersports
  Committee, is leading the protest. He told Undercurrent the
  policy could do more harm than good because it sacrifices
  in–water supervision. “The Caymans have deep dropoffs
  very close to shore, requiring supervision. Divemasters would
  rather be in the water with the divers than sit back on the
  boat and do nothing. Our customers won’t enjoy this great
  experience as much when unsupervised, and at least half of
  them need in-water supervision.”  
To that, the Caymans’ Customs Marine Unit said the
  solution is simple: Hire a lookout. But dive operators like
  Nancy Easterbrook at Divetech say that’s not reasonable.
  “Take a boat that now has one employee and takes six divers
  out. If they take two staff on board now, they also have to
  reduce the diver count to five to comply with boat capacity,
  thereby reducing revenue by almost 17 percent. Include the
  doubling of staffing costs, that’s unaffordable as no one operates
  at these kinds of margins. And like everyone else, we are
  already suffering the high costs of fuel, electricity, etc.”  
While the U.S. doesn’t spell out lookout requirements as
  specifically as the Cayman Islands, the Coast Guard and dive boat insurers make it clear they want a trained professional
on the boat with divers in the water. Federal regulations for
commercial dive operations state: “The person-in-charge
shall ensure that: 1) a means of rapid communications with
the diving supervisor while the diver is entering, in, or leaving
the water is established; and 2) a boat and crew for diver
pickup in the event of an emergency is provided.” Also, “the
person-in-charge shall ensure a boat and crew for diver pickup
is provided.” In its dive-boat insurance policy brochure,
PADI states, “Dive vessel coverage excludes divers while
they are in the water and requires an insured professional on
board. To best protect the vessel owner, diving accidents in
the water should be covered by a professional liability policy
carried by professional instructors and divemasters.”
Inspector Brad Ebanks of the Caymans’ Customs Marine
  Unit told the Caymanian Compass newspaper that the lookout
  regulation has been enforced because of various accidents
  recently, such as a dive boat breaking from its mooring and
  drifting into the reef, causing damage. There had been no
  lookout on board to bring it back. He also said that when
  a diver comes to the surface with problems there needs to
  be someone on board to help if there is no dive buddy with
  them. “We want to keep this as a safe diving destination.
  That’s the reason the regulation is there.”  
While the sides debate, Cayman dive operators plan to
  introduce a GPS system this year that puts geo-tags on all
  dive boats. When the engine is turned off, a boat’s geotag
  is turned on, and an alarm is triggered if it moves past a
  stated perimeter.
But while the industry has governed itself, the government
  says it plans to develop a regulatory regime for commercial
  dive boats. Dive operators say big changes could put
  them out of business. “We have a very high standard of safety
  and very low rates of accidents, decompression sickness
  and fatalities,” says Easterbrook. “By having staff in-water
  with the divers, we have accomplished this safety record. So
  why fix something that is not broken?”