Norwegian Epic cruise ship for Traveller comparisons

[phavoc]

It's a big ship! 155,000 tons, carries 4,100 passengers (assuming double occupancy) and 1,700 crew. If you go to this site here, you can see floor plans for the cabins, and most have an overhead view too - which really helps visualize it all:

http://www.ncl.com/cruise-ship/epic/staterooms/studio#EPIC_STUDIO_T1_R-staterooms-gallery

If I did my conversion math right, she's about 61,135 Dtons. Assuming double occupancy on all staterooms (including crew), that's roughly 2,800 staterooms, or 11,200 Dtons. Of course that's not accurate since the suites range from 100sq ft to 850sq ft. The visual images don't show the pull-down bed capabilities of some of the family suites that are supposed to be able to hold 4 people. I thought it was interesting design to split the shower from the toilet in some rooms to better utilize tight space constraints. My cruise ship experience had a single room for both. You can find ship stats and some other info at the wiki page for the Epic:

http://en.wikipedia.org/wiki/Norwegian_Epic

Anyways, for anyone that likes to see real-world comparisons there's some good info here.

 

[tolcreator]

My back of the envelope calculations give a D-tonnage less than yours.
Even if it was a cuboid, given its dimensions of 329 x 40 x 61 meters, I get 802760 m^3, or 57,340 D-tons (using 14 m^3/D-ton a la TNE) or 59,464 D-tons (using 13.5 m^3/D-ton a la MT). I can't recall what MgT uses...

But the actual volume of the ship will be smaller than this, because the length is from the tip of its prow, the width is the max width, but its hull will curve inwards below the water line, and its height is to the top of the superstructure. Now it is pretty blocky, but I wouldn't be surprised if its actual volume is half that of the max volume you get by just multiplying its dimensions. It makes it really annoying to work out the D-ton size of real world vessels...

 

[phavoc]

I had rounded up the first two numbers, which probably accounts for the variation. I used the standard 13.5 to figure Dtons.

And you are right, the actual number would probably be different, but not terribly far off. The height probably measures to the top of the stack, and the only thing up top is the suites deck and the playground stuff, which in all fairness, could be considered enclosed on a liner, thus making the calculations somewhat the same.

 

[F33D]

My back of the envelope calculations give a D-tonnage less than yours.
Even if it was a cuboid, given its dimensions of 329 x 40 x 61 meters, I get 802760 m^3, or 57,340 D-tons (using 14 m^3/D-ton a la TNE) or 59,464 D-tons (using 13.5 m^3/D-ton a la MT). I can't recall what MgT uses...

But the actual volume of the ship will be smaller than this, because the length is from the tip of its prow, the width is the max width, but its hull will curve inwards below the water line, and its height is to the top of the superstructure. Now it is pretty blocky, but I wouldn't be surprised if its actual volume is half that of the max volume you get by just multiplying its dimensions. It makes it really annoying to work out the D-ton size of real world vessels...

Based on hull curve, front-back and below the "deck" down to the keel; carve ~1/3 off for about 38,000 dtons.

 

[Rikki Tikki Traveller]

Too bad standard MGT rules do not allow double-occupancy.

The only way you could do it would be to allocate 4Dton per passenger, then create a double-stateroom that is the equivalent of 8Dtons.

YTU may vary

 

[phavoc]

Too bad standard MGT rules do not allow double-occupancy.

The only way you could do it would be to allocate 4Dton per passenger, then create a double-stateroom that is the equivalent of 8Dtons.

YTU may vary

The stateroom rule/concept has had continuing holes in it since the first LBB. I think it's just been left there to dangle, much like the often maligned drive table, or sub-2000 hull table. Everybody knows there are big holes, but everyone just kind of ignores it. But, to address what you stated, that's not quite correct. See below:

CRB, pg 110

Quarters for the crew and passengers are provided in the form of staterooms containing sleeping and living facilities. Each stateroom is sufficient for one person, displaces 4 tons, and costs Cr. 500,000. In some starships (especially exploratory vessels, military ships, and privately-owned starships) staterooms can be double occupied. No stateroom can contain more than two persons however, as it would strain the ship’s life support equipment. The tonnage and cost of the staterooms includes the life support systems needed to keep the crew alive.

Merchant Prince, pg 114

Stock Barracks (TL7): Used by slavers and livestock peddlers, a stock barracks is extremely low-grade housing for animals and slaves. Stock barracks are sold in increments of 10 tons, which
can hold 20 humanoid-sized life forms safely and healthily. These ship add-ons come with their own air scrubbers and waste-collectors, placing no further taxation on the life-support systems of the ship. Cr25,000 per 10 tons.

Not unusual, there's a disconnect between books. So essentially what you have here is 1 Dton of space able to support 2 people (in cramped, shitty conditions). Crews wouldn't put up with this unless absolutely necessary. However history has shown us crews in military and merchant ships put up with some pretty crappy conditions to serve. Passengers though don't, usually, unless they have no choice, or in general conditions are shitty everywhere. I would have thought passage aboard early galleys and other ships would have royally sucked if you had no ability to go above decks. Cabins back then were tiny. And the slave ships (shudder). About as bad as you can get.

 

[Condottiere]

If you can separate life support, specifically oxygen (re)generation and atmosphere pollutants and toxic chemicals removal, you can the separately calculate how many people could be supported.

 

[Sevain]

When you invest 1 dton into life support you also get enough room for the person to sit down and maybe even turn around. You can probably stick all the life support into the roof and floor structure (if by no other means then by lowering the floor height), which leaves the person with a 1,5m X 3m space. That really isn't a lot of room, but it is not difficult to see people arriving at the other end of a jump still healthy and sane.

Once you spend 2 dtons you get your typical half-stateroom: adequate for the military, belters and other tough people but not something you can sell to a passenger under normal conditions. 3m x 3m space might not sound like a lot but it has those two squares more than what is needed to store the person. You can use your two extra squares to provide rooms such as a lounge or pantry, especially if you combine multiple people into one barracks style room.

At lower technology levels people might have lower standards. People who are used to life under primitive conditions, say TL 7 or 8, might be so accustomed to hardship and confined spaces they would be willing to pay money for even a half-stateroom on a ship, or to serve as a crew member with only 1 dton per crew allocated to them. Such people would of course be the exception in a stellar society.