... The Consolidated CT Errata indicates that the mercenary cruiser uses a custom hull. ...
I've just had a thought about the difference between standard design plans and standard hulls.
A standard design is any ship class that is built in quantity over large area and/or a long period of time.
A standard hull is one where the main compartment and engineering space specifications are always the same and run through say an automated line or something of the sort. ...
I think it's a lot more likely that there are scores of standard designs. Think for a moment what a standard design hull IS. Is it a hull that some company produces assembly line style and sells by the lot to individual shipyards? Or is it a design that the particular shipyard you buy from knows just precisely how to build, having built quite a few of them before?
...
My apologies for conflating two different items. For CT Book 2 purposes, there are six
(oops, seven) standard
designs, with the result that you don't have to pay an architect but can buy ready-made blueprints. That saves you the 1%-of-cost-of-ship price for design plans, AND you net a 10% reduction in price because they're easier to build, being common. They are the 100-ton Scout/Courier, 200-ton Free Trader, 200-ton Yacht, 400-ton Subsidized Merchant, 600-ton Subsidized Liner, 800-ton Mercenary Cruiser, and 400-ton Patrol Cruiser. And, "(o)ther standard plans may be available at various localities." So, you can most likely find a yacht deckplan or a safari ship deckplan and a place familiar with their construction somewhere. Or, as you point out, Rancke, you could design your own (and pay the architect's fee) and then order a run of several of them and get the 10% discount on the second and later ships.
Then there are the six standard
hulls. The standard
hull is supposedly something they produce so frequently that they give you a discount for the hull itself, though not for the other goodies. Whether that's because the hull is being shipped in prefab from Rhylanor or because the yards themselves are turning them out, that's up to the gamemaster. The standard
hulls are a 100dT hull with a 15 dT engine compartment (used for the Scout/Courier), a 200 dT hull with a 15 dT engine compartment (used for the Free Trader and, from its price, the Yacht), a 400 dT hull with a 50 dT engine compartment (used for the Subsidized Merchant, though with a smaller engine installed and 15 dT of unused drive space), a 600 dT hull with an 85 dT engine compartment (used for the Subsidized Liner), an 800 dT hull with an 165 dT engine compartment, and a 1000 dT hull with an 165 dT engine compartment.
As snrdg points out, the Broadsword is said to use a custom
hull (though it is a standard
design), so we do not in fact have any ship known to use the supposedly standard 800 dT or 1000 dT hulls (which, since no one is getting a discount for them, probably shouldn't be a surprise).
Net result is that the scout, free trader, subsidized merchant and so forth get a discounted hull and then
also get a 10% discount on top of that. That's one of the several reasons they cost less in CT Book 2 than they do in High Guard.
Question remains whether we should continue citing the 800 and 1000 as standard
hulls when there's no discount for them and no ship based on them. 185 dT engine space can fit a set of R/R/Rs, which is 4G/Jump-4 for an 800 dT, which is warship territory - an odd class to make a standard hull. Or you could do an SMS, or a THT, or a UDU, but that accomplishes precisely nothing in an 800 other than to slow it down. An interesting option is an MVV: 5G/Jump-3, again likely a warship. Maybe they don't get discounts but build faster because they're intended to be warship hulls.
In a 1000, it gives you 3G/Jump-3 (and is oversized since a Q/Q/Q does as well at lower cost and with 10 dT room to spare). And, again, the other combinations do nothing but slow the ship down - except an interesting option here is a KXX: 6G/Jump-2, likely a warship.