What exactly must they have done before? Because it is clear that a single person cannot have done what you ask, whatever that may be. A team of people, that is to say a naval technical office, can be found easily. But not even an independent technical office can say "that boat you see floating there is my project." That can only be said by the technical office of a shipyard.hear from those who have done this before
You better focus your demand and you will be able to find more concrete answers. What should the, or those, who supervise that design do, what responsibilities should they assume? One cannot take responsibility for a calculation if he has not made that calculation with what there is no such supervision, but the realization of the calculations.
Are you looking for a Project Manager? Well that's something different, easier to get.