[NYCAP123]

First, going back to the first post: did anybody find a 7' draft on a 34' boat a little strange. Like maybe she's sunk in 4' of water.
Second, Although I'm not familiar with this model boat (and I assume the 78 refers to the year), if there is a charger it would be mounted on a bulkhead. However even if there is a charger it's bound to NOT be a smart charger so it will probably cook the batteries if it works at all. Your best bet is to pick up a regular auto charger for now to get things working although 4 year old batteries in a boat that's been sitting are bound to be no good. In fact I'd probably skip the charger altogether and just go for the new batteries. Once started the alternator should keep them charged.
Third, if this boat has been sitting in its slip for the past 4 years you best take a swim because I suspect she's going no place.
Fourth, when you refer to the fresh water fill I assume you're talking about the boats fresh water system (not the motors cooling system). Is there a tank or just a shore water connection. In either case if the hoses are disconnected it's because the system leaked. You're looking at replacing the entire system. Remember, more boats sink from dockside water than salt water.