Re: Basic arsemetrics
' suspect that a decent civilian design can have a 30 year life, and 'military spec' includes plenty of gold-plated nonsense.'
A civilian design can last that long, if used as intended, however navies tend to do more throwing it around style driving and less plodding along in a straight line at a sensible pace. Consequently vessels built to civilian standards but operated by a navy tend to wear out faster. Which was known when Ocean was ordered. Brasil is likely to use her less intensely and also has plenty of cheap manpower to throw onboard, which the RN lacks.