Interesting discussion this.
On our island one of the operators (the one that takes the Cruise ship "contract divers") limits the dives to 45 minutes and usually runs a "one out all out" group diving. Second dive is usually very close to the dive shop.
This is a business decision, probably based upon getting in a second afternoon tour outside of the cruise ship contract. (NOT based upon getting guests back in time for ship departures).
We ourselves work on a maximum 60 minute bottom time (or NDL) for all dives and combine this with a minimum of 1 hour for surface interval.
We often get divers back to the boat in less than 60 mins, but the ones who can, do, and appreciate the fact that they get a longer dive time.
Some of our divers come from the very same cruise ships, they have booked with us direct.
Choose your operator with care and ask the right questions before booking.
On our island one of the operators (the one that takes the Cruise ship "contract divers") limits the dives to 45 minutes and usually runs a "one out all out" group diving. Second dive is usually very close to the dive shop.
This is a business decision, probably based upon getting in a second afternoon tour outside of the cruise ship contract. (NOT based upon getting guests back in time for ship departures).
We ourselves work on a maximum 60 minute bottom time (or NDL) for all dives and combine this with a minimum of 1 hour for surface interval.
We often get divers back to the boat in less than 60 mins, but the ones who can, do, and appreciate the fact that they get a longer dive time.
Some of our divers come from the very same cruise ships, they have booked with us direct.
Choose your operator with care and ask the right questions before booking.