I can't help much in terms of S-76 info, but the Jayhawk, for all intents and purposes, is a first cousin of the Seahawk, so the following Seahawk information is provided...hope it gives a benchmark for those who come later with the info on the C++.
Seahawk(SH-60B, S-70B-2)
Max AUW - approx 21000 lbs
Max Fwd Speed - 180 KIAS
Cruise Speed - approx 120 KIAS
Hook Capacity - 6000 lbs
Hoist Capacity - 600 lbs
Endurance - about 3.5 hrs (2 x T-700-GE-401C engines use about 1000lb/hr)
Range - dependent on speed, external jugs (about 35o nm without jugs; up to, say, 600 nm with full internal fuel and two jugs at max range speed of about 135 KIAS)
Pax - depends largely on cabin configuration; up to 8 seated (plus the crewman), or two stretchers, or lots if all the seats are out and we're cramming them in like sardines
Generally a nice ride for the front seaters and a reasonably solid performer. Puts out HUGE ammounts of downwash at a 60-70 ft hover overwater (or overland for that matter) so dust and seaspray are a factor (as well as not blowing away the small airplanes, boats, and bathers). From my experience, its not the most pleasant bird to have hovering over you when you're getting winched (lots of spray in the eyes...you really rely on the crewman to either get the strop into your hand, or come and help you personally, which I believe is the way the USCG do it).
One thing the Jayhawk has over the Seahawk is that slick glossy paint job...beats flat gray any time.
Happy to provide more if there are holes in my info.
HP