hi azimech,
just dropping a quick line to let you know that your definition of water isn't really compatible with anything else that uses a "water" resource. as far as i can tell you define one litre of water to weigh 1 ton.. x)
i don't know much about modding, but maybe you could try to use the water-definition from the CRP? Wouldn't know the consequences for your ships though...
anyhow, thank for your mod which hopefully will work for me tonight after redefining its water density...