An offshore racing game is about the only racing game not done. Not surprised as the cost/time to do one properly would be extensive. Yet the expertise is there. My personal opinion with 30 years of computer experience and gaming experience. Mark Nine Systems would be a great choice of programmers. Lots of history, but one of the projects "TargetWare" is slow in development unfortunately, private ventures delay development. But despite it's slow development is the most extensive in real aspects of aircraft in a CMS enviroment "combat flight simulation", other than full blown military simulations. Unfortunately currently between a major upgrade of code, so is not really usable at the moment. My experience with the old code, tells me the new will be far beyond anything else out there, as was the old already.
If a similar type of program was implemented for offshore racing, the core code could be done, while the modeling could be left to the players/teams/modelers to make any type of "boat" they want. As is the current modeling of the targetware software. One great thing about Mark Nine code development is that they do it for Linux, Apple, and m$. So no one using any operating system is excluded, not forced use to pay and continue the m$ monopoly.
I am not an employee or have any kind of business association with Mark Nine Systems. I have simply been a user/enthusiast of there CFS software, along with 30 years of gaming/computer experience to draw from .
I would assume some financing could motivate an offshoot of code that takes in to account real world numbers for water and mechanicals. Which would emulate real world offshore racing factors. It is a well known fact that all car racers, nascar, indy, formula one, as well as military/civilian pilots, play/practice for flight training/evaluations/events to sharpen skills. In competition for aerial combat with lasers attached to real aircraft. Dale (Hitech) of Aces High fame, long time programmer/designer of CFS games. Has beat real military pilots in real world competition despite having no military aircraft experience. Simply points out that thousands of hours of simulation applies directly to the real world. Unfortunatly Aces High is about gamplay rather than realism.
No reason why offshore racing could not join the group, if for nothing more than pleasure and online competition for offshore racing enthusiasts.
From a business point of view may not be a profitable venture, who knows the potential total of paying users, but would definitely be a hit with a core group of users.
http://www.mk9sys.com/
http://www.targetware.net/