Re: 1989 Hunter 40 - A million questions.
Those would be inspection or cleanout plates smacky, the baffles would be inside the tank to prevent all the water from sloshing quickly from side to side, front to back. The pattern may suggest the tank is divided into quarters by baffles with a plate over each quarter. There are small openings in the baffles, you just don't want half a tank shifting all at once, creates a big shock load inside the tank.
105 gallons x 8.5 lbs. per gallon = 892.5 lbs. that's quite a water tank you got there.
Last edited by capttb; 08-04-2013 at 08:22 PM.