Don't know what this turned into a fist fight last time, how about we suspend egos and try to just have a factual discussion... The vessel is a 1952 Feadship, 56' LOA, 13'2" Beam and a draft of 4'6". Steel hull, twin 671 detroits. I just finished installing 16 AGM batteries weighing 100lbs each. They were installed almost exactly in the center of the vessel lengthwise. They are just slightly to port of centerline and are about 20" below waterline. As soon as I installed the bank I noticed that the vessel has become "tippy", as I step onto the side deck from the dock she now noticeably rocks, which she had previously not done. I must say I'm a bit confused as I would think that adding 1600 lbs of weight below waterline would have made her more stable, not less. When I purchased the vessel she had 1200 lbs of batteries in nearly the same location although they were slightly starboard which served as starting and house bank, I now have 1600 slightly port, very slightly in that same location with an additional 200lbs of batteries outboard of each motor. Overall I have added an additional 800 lbs of batteries and that additional weight is distributed widely. In her original (from the factory) configuration she had batteries outboard of the motors, like now, and the battery bank was about 600 lbs and mounted starboard of center. This is a 64 year old vessel and has undergone many changes. Originally there was a genset on the centerline aft, at some time this was moved all the way forward and as far port as possible in the engine bay. A 50 gallon (500lb full) waste tank was also added forward and starboard. When I purchased the vessel the entire foredeck was rusted under the teak and the steel had expanded from 1/4" to nearly 3" of wet rust. I can not begin to calculate how much weight i removed by cutting this out and replacing it, but replacing the entire deck did raise the waterline about 2" on a 56' long 13' wide vessel weighing 28 tons... Looking at it mechanically, adding weight low would move the center gravity closer to the fulcrum point by lowering the center of gravity, this would explain why the action of weight added to the outside deck (end of the lever) would more easily tip the vessel. At some point in the history of the vessel this was obviously an issue as bilge keels were added. Attached is an image, top is the original config, middle in the config when I purchased and bottom is current. My question is if I can make the vessel more "Seakindly" by adding ballast in other areas?