120 bucks for 2 dives, that is insane. I couldn't do a charter every week for that price.
That's about the standard price (includes tip) where I dive, off the NJ coast.
My record was paying $400 for a trip aboard a ~60 foot dive boat, ~12 people total, to a wreck about 70 miles off the coast. I got one dive in before things got too rough for me to be comfortable.
I'm sure a lot of others have had similar experiences...
If I shore dive/Dutch Springs (with membership), after fuel, air, and food, a weekend of diving breaks down to ~$10 a dive give or take a bit.
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"My" dive boat; well, I currently crew for a local research/expedition group, so I pay by helping out with maintenance, filming, diving, and video editing.
It's a 42ft Chris Craft Commander, extensively modified for diving.
She'll sleep 8 comfortably(ish), and has a full head with shower.
We usually head out with 4 persons max (total), which is nice.
If/when I have money, I always offer to chip in for fuel too!
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All the other dive boats in the area range from 40 to 80 feet, and a couple (Garloo comes to mind) even have multiple full decks, not including the bridge!
None of them (that I know of) have lifts.
All the boats here I have been on use the type of rig most often called a "Carolina rig/line" (known by that around here at least) with a line running from the stern quarter, to the anchor line, which is tied in.
On the longer (full day to overnight +) trips, food and drinks are included.