Well lads I accept your mathematical calculations are correct and based on sound judgment .....but when I built my 1/96 scale model of a type 15 Frigate [HMS Troubridge ] I took a more simplistic approach to the problem and fitted a 1/2kg lead weight to the underside on the central keel line beneath the bridge structure and between the bilge keels and it worked perfectly and was admired by ex members of her crew as very lifelike to their passage in her to the Caribbean in the early 60's
Whilst I accept that your calculations and procedures are mathematically correct and precise , my model won the hearts of the ex crew members as spot on and they breathed a sigh of relief as , in their opinion, the design was very unstable due to the introduction of Aluminium superstructure fitted to a steel hull during the refit at Weights after the Second World War conversion to a type 15 Frigate in the mid fifty's as unstable and thought that it would actually turn turtle whilst travelling through the bay of Biscay on the ships work up prior to acceptance by the RN but that's only my opinion that is based on crew heresy not statistical fact , and they also complained at sea water sloshing around the mess decks where the joint between the two elements was seen to have split .and in later life required serious rework to maintain water integrity where the dissimilar materials were joined ..... ....but what do I know...... I'm just a model maker..... not a navel architect