If we interpret that the way you suggest, Bilstein wouldn't be building Leviathans at all, since they are a class, not a single ship.
Yes, it's a class of ship, albeit one that's produced at the rate of roughly one example per year.
I take the statement as meaning that Bilstein mostly do one-offs. But they also do the occcasional run of ships. In fact... hang on... yes, here it is, in the library data in Leviathan, p. 39: "Bilstein are the main suppliers of private yachts to the March [sic] nobility and this provides the bulk of their output. Occasionally, however, a class of vessels such as the Leviathan merchant cruisers are turned out..." (emphasis mine).
Sure, but that doesn't turn Bilstein into a mass producer, nor does it mean that their non-uniques are going to be anything but upmarket too. Bilstein don't have the infrastructure to produce anything quickly nor inexpensively, nor would they have much motivation to. Considering their established niche, it's a self-defeating idea from a marketing perspective alone.
Speaking of which, I've noticed something a bit off (from a
Traveller rules standpoint) regarding the Leviathan class; namely, their excessive production times. CT:Starships gives a construction time of about 138 weeks (32 months) for an 1,800 ton vessel. CT:HG says a 'competent' shipyard can build it (actually, anything under 5,000 tons) in 'less than' 156 weeks (36 months) as a one-off, and in no more than 125 weeks if it's an established design. Extrapolating from the tables on CT:TCS (as their rules suggest) starts with about 125 weeks construction time for a Leviathan-sized one-off, and then rides that down to 89 weeks for an established design.
By contrast, Bilstein take about 199-205 weeks to produce a Leviathan, or just about a month to a few weeks shy of four years. That's almost a third longer than than the longest estimated rules time, and around 130% longer than the shortest one. And keep in mind that the longest time given is the least defined, and it's not for an established design.
So if you're choosing between ponying up for a Leviathan or a similar but more pedestrian hauler cranked out by LSP (assuming their construction rates are rules-standard), you're going into it knowing that you will be out on the market months -- or even years -- ahead of the game with that LSP ship than you will with the Leviathan. So the question is then: why choose a Leviathan?
I'm basically going with quality and panache, with a touch of extra durability (and fancier toilets), for my answer; but you're results may vary.
At any rate, the takeaway is that Bilstein are definitely
not an efficient (or 'competent', if you prefer High Guard's assessment) shipyard. And inefficiency certainly is an enemy of cost-effectiveness. And yet Bilstein don't seem to have any problem drumming up customers.
I have much more of an issue with the notion of Baraccai Technum, McClellan Factors, Tukera Lines, the Imperial Grand Survey,Oberlindes Lines, and Arkesh Spacers paying a premium for extra-luxurious ships (Especially Oberlindes and Arkesh).
I'm gradually settling on the notion, at least, that BT have some sort of longstanding 'special relationship' with Bilstein. I just saw an entry on Don's Timeline, for example, which mentioned another bulk ship agreement between BT and Bilstein.
Those other guys I raise eyebrows at, too. Maybe Leviathan is intended as a promotional push (but then why Arkesh Spacers)? Or maybe it represents an attempt by the company (abortive or otherwise) to quietly dip its toe into the broader market?
Another thing I noticed about the Leviathan construction dates is that the first order was put down in early 1086, or about a year or two after the close of the Fourth Frontier War. We do know that there was a sharp cash panic right after the war (
Twilight's Peak tells us that), and it would make sense that a luxury manufacturer like Bilstein Yards might find itself unaccustomedly hurting for orders as a result. Leviathans, then, in that case could represent a strategy by Bilstein to maintain cash-flow stability without compromising their reputation for high end design. Judging from their apparent history together, Baraccai Technum would be the most natural fit for such a project -- although one wonders what BT thinks about the likes of McClellan Factors and those mooks from Arkesh Spacers getting a chance to leech off the marque.
I wonder if LSP really do build thousands of ships per year. I just noticed something that will need a creative explanation if they do: From 1086 to 1100, Bilstein Yards is assigned 'MC' (Merchant Craft?) numbers for their merchant-oriented Leviathans, MC-50164, for the Leviathan, MC55027 for the Vanoriel. Does that mean that within the jurisdiction of the agency that hands out those numbers (Duchy of Glisten, Spinward Marches Sector, Imperium?), 55027-50164 = 4863 merchant vessels were built? That seems a reasonable interpretation, and, if so, we have an average of 347 merchant ships being built per year (within the duchy/sector/Imperium-wide).
There are some interesting ramifications to this that might deserve a thread of their own.
Looking at the serials, it's definitely intended to be a progression, and I dunno that I like it very much. That's too vague to be localized to the system, and 347 vessels a year seems ridiculously low for a sector, let alone an Imperium-wide (or even a subsector-wide, for that matter) registration. Frankly, I find it low even as a representation of output for the Glisten system alone.