tlb wrote:Ingenious suggestion, but I think the answer is no: a ship built with the constraint of a destroyer sized hull (basically taking some weapons out and substituting fuel and cruising necessities) would still be a destroyer; the same as doing that to a frigate leaves the result as a frigate (but without a good weapons package). I looked in House of Steel, but could not find a description of a frigate; everything I have seen in the outfitting of Torch indicates that they are smaller than a destroyer and closer to a dispatch boat in size. You seem to suggest that that a destroyer and a frigate are about the same size. Is that so?
If they are about the same size then that explains my confusion; but if they are significantly different sizes, then the larger ship should have been modified for long range cruising.
They're not the same size
now especially not the LAC derived ones designed for Torch. DDs designs got larger and larger as the years went on; that's what caused them to end up with near the endurance of old CLs and put the final nail in the coffin of the Frigate design.
And you don't see Frigates in HOS because they've all been retired before the point in time it covers. It only describes active classes as of that date.
Remember Honor's CL Fearless from OBS a Courageous-class CL (an 1820 design) was 88,250 tons; its age-mate is a Noblesse-class destroyer of 68,250 tons. And by then we're already diverging from CLs being just longer ranged DDs; because the extra 20,000 tons let each broadside carry 3 extra tubes, a pair of grasers (though only 2 lasers to the DD's 3), and 1 extra CM. (Though reported to have small magazines; as so poor sustained combat power)
2 DD classes later, in 1861, we're up to the 84,500 ton Havoc-class then some shrinkage for 1867's Chanson-class (78,000 tons), but then the modern destroyers by the start of the war were 87,250 ton Javelin or 104,000 ton Culverin class ships. So in 80 years destroyers had grown larger than CLs used to be.
And the classic frigate - destroyer - light cruiser triangle came into being probable at least a century before the 1820-era ships that are the oldest HoS covers for DDs or CLs.
Unfortunately while RFC has talked of them from time to time, the only frigates we have a full ship listing for are Silsia's 1868 Gryf-class (from the SITS books); but their ships are so crummy it's hard to know if it's representative. But for what it's worth it was a 53,500 ton design; which is at least 15 thousand tons heavier than a courier.
So back in, say, 1750 PD we don't know for sure the tonnage of a new frigate vs destroyer vs CL. I personally think back then that the frigate was closer to DD weight because DDs would have been smaller yet than they were in the 1820s; so in some ways a FF back then probably
wasn't far off from a DD with a several fewer weapons mounts, and downsized magazines, to free up space for more fuel, food, and spares.
Also Theemile has a good point about laser-heads. Prior to them I think smaller ships relied far more on auto-cannon or later PDLCs and mounted few or even no CMs (of course the CMs were probably physically larger; less refined; than they were by 1820PD); having to carry more and more CMs is part of what drove up the size of the minimum viable combatant (which almost as a byproduct made it proportionately cheaper to include greater range into DD designs; cutting into the range advantage of FFs while still being cheaper than the newest CLs which also had to grow to retain any combat edge over DDs)