Good video. Nice to see some late war blind firing.
On the subject of FaTs, was reading an old thread recently where there was some discussion regarding what constituted a 'FaT boat' or 'LuT boat', in that there had to be specific modifications to the attack computer and torpedo tubes. Wondering if anyone could shed more light on this.
Would these modifications be retrofitted to older boats or would it be more likely to apply to newer ones coming off the production line?