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Old 06-22-2013, 09:05 AM   #1
vicky_molokh
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Default Spaceships, Floor / Deck Plans, Volume and Hexes

Greetings, all!

Trying to figure out the amount of space, I see something troubling. According to the author's expansion, an SM+8 ship's systems provide about 16-50 one-yard hexes each. A Habitat module for SM+8 provides 6 Cabins, with each cabin being suitable for accommodating two people.
That's somewhere between 1.33 to 4.16 hexes per person.
A single one-yard hex is the equivalent of 0.54m (0.64yd). At best, this means 2.24m (2.66yd) of place per person.

How is one supposed to fit a bed, let alone a cabin, into that amount of space?

Thanks in advance!
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Old 06-22-2013, 09:12 AM   #2
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Default Re: Spaceships, Floor / Deck Plans, Volume and Hexes

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Originally Posted by vicky_molokh View Post
How is one supposed to fit a bed, let alone a cabin, into that amount of space?
I ran into this when I started trying to create deck plans based on those designer's notes. The first thing is to go with the upper end of the range for habitat modules. In this case, I wouldn't bother with less than 45 hexes per system. Second, think submarines rather than cruise ships, let alone buildings. Most crew will sleep in stacked bunks, so two-ish hexes will sleep two crewmen.
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Old 06-22-2013, 09:14 AM   #3
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Default Re: Spaceships, Floor / Deck Plans, Volume and Hexes

A bed is only about 1 yard by 2 yards; it should fit within 2 hexes.
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Old 06-22-2013, 10:15 AM   #4
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Default Re: Spaceships, Floor / Deck Plans, Volume and Hexes

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Originally Posted by Turhan's Bey Company View Post
I ran into this when I started trying to create deck plans based on those designer's notes. The first thing is to go with the upper end of the range for habitat modules. In this case, I wouldn't bother with less than 45 hexes per system. Second, think submarines rather than cruise ships, let alone buildings. Most crew will sleep in stacked bunks, so two-ish hexes will sleep two crewmen.
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Originally Posted by Langy View Post
A bed is only about 1 yard by 2 yards; it should fit within 2 hexes.
I was looking for cabin sizes, not bunks. For bunks, there's actually 0.66 to 2.08 hexes per person total (apparently both for the room and the bed-slot).

And if a bed is 1 yard by 2 yards, that makes it 2 square yards. A hex is 0.64yd, so it takes 3.125 hexes for the bed alone.

I wonder if calculating volume from SM is actually a better idea.
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Old 06-22-2013, 11:16 AM   #5
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Default Re: Spaceships, Floor / Deck Plans, Volume and Hexes

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Originally Posted by vicky_molokh View Post
I was looking for cabin sizes, not bunks. For bunks, there's actually 0.66 to 2.08 hexes per person total (apparently both for the room and the bed-slot).

And if a bed is 1 yard by 2 yards, that makes it 2 square yards. A hex is 0.64yd, so it takes 3.125 hexes for the bed alone.

I wonder if calculating volume from SM is actually a better idea.
First, the area of a hex isn't 0.64 square yards - it's 0.86 square yards. I'm not at all sure where you got 0.64 square yards from.

Second, yes a bed will extend a *little* bit into the corners of the 'edge' hexes, but it's close enough.

Third, beds are still likely to be bunk-beds even in Cabins.
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Old 06-22-2013, 11:33 AM   #6
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Default Re: Spaceships, Floor / Deck Plans, Volume and Hexes

Yup, when I ran a hard-SF space campaign, most astronauts got a coffin which was their room, entertainment, personal storage and bunk, all-in-one. Since everything was in zero-g, habitat sections resembled hives, with bunks on every wall.

Y'know, like this.
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Old 06-22-2013, 11:41 AM   #7
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Default Re: Spaceships, Floor / Deck Plans, Volume and Hexes

Imagine an hexagon, now name the edges A, B, C, D, E and F.

If 1y is from the edge A to edge D, then it is 0.64952y, rounded to 0.65y
If 1y is from line AB to line DE, then it is 0.866y
Thats a 4/3 difference.

Last edited by gilbertocarlos; 06-22-2013 at 11:44 AM.
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Old 06-22-2013, 11:46 AM   #8
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Default Re: Spaceships, Floor / Deck Plans, Volume and Hexes

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Originally Posted by Langy View Post
First, the area of a hex isn't 0.64 square yards - it's 0.86 square yards. I'm not at all sure where you got 0.64 square yards from.
The area of a hexagon equals 3sqrt(3)edgeLength׽; for a 1-yard hexagon, the edge equals yard. So 3sqrt(3)׽׽׽ = 3 sqrt(3) 0.125 = 0.64 yd.
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Old 06-22-2013, 11:54 AM   #9
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Default Re: Spaceships, Floor / Deck Plans, Volume and Hexes

Er, the edge length of a GURPS hex isn't half a yard. The edge length is about 0.58 yards.

A GURPS hexagon has a side-to-side length of 1 yard (so to travel through one whole hex you travel one yard). Call this side-to-side length 'd'. The area of a hexagon is sqrt(3)/2 * d^2, or in this case just sqrt(3)/2, or 0.866.

Quote:
Originally Posted by gilbertocarlos View Post
Imagine an hexagon, now name the edges A, B, C, D, E and F.

If 1y is from the edge A to edge D, then it is 0.64952y, rounded to 0.65y
If 1y is from line AB to line DE, then it is 0.866y
Thats a 4/3 difference.
I think what you meant was that the vertices are A, B, C, D, E, and F.

A GURPS hexagon has a distance of 1 yard from line AB to line DE - that's the distance someone would need to travel to cross the hexagon from a hex directly below it to the hex directly above it.

The distance from one vertice of the hex to the opposite one doesn't matter at all; it's not something that's within the GURPS definition of the hex and has no relation whatsoever to hex-based movement.

Last edited by Langy; 06-22-2013 at 12:00 PM.
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Old 06-22-2013, 12:15 PM   #10
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Default Re: Spaceships, Floor / Deck Plans, Volume and Hexes

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Originally Posted by vicky_molokh View Post
I was looking for cabin sizes, not bunks.
Sure, but revising your thinking on bunk size allows you more room for other necessary uses of space. A double-occupancy cabin could be, say, five hexes, with three-ish hexes left over for a share of common space like a kitchen, mess hall, and bathroom facilities.
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