Vladika
SOC-14 1K
Stumbled across this thread while browsing. I must have wanted to look up some data before replying and never gotten around to it.
I don't think that's a tenable assumption. We have quite a bit of information about the Azhanti High Lighting. 100 were ordered and 92 of them were built. The first was laid down in 991 and the last to be completed was laid down in 1003. No replacements for lost ships were built, perhaps because they were TL14 designs. The class was discontinued in 1048. That's discontinued by the IN; a number of them were transferred to auxiliary duties. So it looks like their primary service life was roughly 50 years.
The TL15 Atlantic class was produced from 1020 (possibly a bit earlier) until 1050 and in 1105 it is "fast approaching obsolescence". That's a service life of 80 years, although by the end of that 1/3 of the Atlantics have been lost one way or another despite the absence of a major war in the period.
From these examples I'll venture to say that a century is plenty of time to replace the entire Imperial Navy at least one time over, part of it twice.
Hans
Funny, I was just reading that old thread...I'd probably be drawn and quartered though if started a rehash?