Let's talk ship size, cargo capacity and how incredibly silly this is in Elite: Dangerous.

A long time ago, someone (I wish I could find the post to credit them properly) on reddit made a post with the bounding box and actual enclosed volume of each ship. I made a copy of their data and used it for some of my own stuff, and recently I've been wondering why the spaceships in Elite: Dangerous are such terrible transporters.

As an example - the fleet carriers can take 25,000 tons of cargo. That sounds impressive, but it's a ship that's 3.2 km long and 700 meters wide (no idea about its height). The Evergreen ship Ever Given, which recently blocked the Suez Canal is 400 meters long and 60 meters wide and can carry 20,000 twenty-foot container. Those are typically 6.1 x 2.44 x 2.59 meters and all of them have a maximum gross mass of 24 ton with a maximum cargo mass of 21.6 tons. In other words, the Ever Given can carry up to 432,000 tons of cargo. That single cargo ship can carry more than 17 times as much cargo as a single fleet carrier. This is not exactly impressive.

A Type-9 is 117 meters long, 115 meters wide and 33 meters tall. It can carry a maximum of 790 tons of cargo. That's between 36 and 37 twenty-foot containers. A stack of 6x6 such containers would be 37 meters long, 15 meters wide and 2.59 meters tall. Considering the size of this ship that is built to carry cargo, that is a drop in the bucket. And it made me wonder - just how low density are our spaceships?

Well, the highest mass I can manage to make a Type-9 is 2,219 tons by B-rating everything, putting weapons and shield-boosters in all utility slots. The ships volume is 157,616 m^3. Density is mass/volume - 2,219 tons / 157,616 m^3 = 12.8 kg/m^3 . Water is 1,000 kg/m^3. At 101.325 kPa (abs) and 15°C, AIR has a density of approximately 1.225 kg/m^3. Styrofoam has a density of approximately 75 kg/m^3.

The density of the air at the surface of Venus is 67 kg/m^3 - five times that of the highest mass Type-9. None of the thrusters on the Type-9 will allow it to ever get to the surface (if it's airtight and loaded in a normal atmosphere).

A ship like a Type-9, a ship that is built to carry as much cargo as possible, should be able to carry a LOT more cargo than it currently does. The idea that we're 1,300 years in the future but has somehow failed to figure out how to move cargo in an efficient way.

Of course, fixing that kind of problem raises another - making money becomes much, much easier, because we'll be carrying a lot more goods from the start. Don't get me started on income and prices in the game, because that's also horrendibly broken/illogical.
 

Robert Maynard

Volunteer Moderator
As her deadweight is a little less than 200,000t, the Ever Given can't carry 21.6t in all of the containers onboard. The permissible deadweight includes fuel, fresh water, stores, crew, etc.. as well as cargo.

A not insignificant portion of a Fleet Carrier's volume is assigned to her hangars - not cargo.
 
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As an example - the fleet carriers can take 25,000 tons of cargo. That sounds impressive, but it's a ship that's 3.2 km long and 700 meters wide (no idea about its height). The Evergreen ship Ever Given, which recently blocked the Suez Canal is 400 meters long and 60 meters wide and can carry 20,000 twenty-foot container. Those are typically 6.1 x 2.44 x 2.59 meters and all of them have a maximum gross mass of 24 ton with a maximum cargo mass of 21.6 tons. In other words, the Ever Given can carry up to 432,000 tons of cargo. That single cargo ship can carry more than 17 times as much cargo as a single fleet carrier. This is not exactly impressive.

Because you are confusing "tons" on the surface of the earth, which is a weight measure and only exists at exactly 1g with the tons used on space in the 3300+, which is an entirely different measurement. A ton of stuff that the Evergreen is carrying would weigh, wait for it 0 tons in space, so that idealised 1g method of calculating what a ship can carry has no meaning in space, none at all. A Fleet Carrier could actually carry the equivelant of a million tons if it was fully loaded with platinum, try putting a million tons on the Evergreen.

So we have to accept that we can't directly translate tons of cargo from an earth bulk carrier to any of the ships in the year 3300+ and trying to will just cause confusion.
 
Because you are confusing "tons" on the surface of the earth, which is a weight measure and only exists at exactly 1g with the tons used on space in the 3300+, which is an entirely different measurement. A ton of stuff that the Evergreen is carrying would weigh, wait for it 0 tons in space, so that idealised 1g method of calculating what a ship can carry has no meaning in space, none at all. A Fleet Carrier could actually carry the equivelant of a million tons if it was fully loaded with platinum, try putting a million tons on the Evergreen.

So we have to accept that we can't directly translate tons of cargo from an earth bulk carrier to any of the ships in the year 3300+ and trying to will just cause confusion.
That only holds if you ignore that the game talks of tons itself. Otherwise you're right.

But since the game does talk about both weight and mass interchangeably, regardless if we're on a 0G outpost in space, a 0.1G space station or a surface station on a high-G planet, we can very safely assume that the weight mentioned in game is referring to weight in a 1G environment. I can't remember where we encounter a 1G environment in our daily lives, but I'm sure someone pedantic will tell us.
 
A not insignificant portion of a Fleet Carrier's volume is assigned to her hangars - not cargo.
It should still be able to accommodate far more than 25,000 tons. The measurement used in game is also silly - a cargo canisters is the same size, regardless of its contents. That means its volume is a far better measurement of cargo capacity. I haven't seen the actual measurements of one, but I think 2 m^3 is a reasonable guess. Could even go for 4. It also makes it a lot more fun to compare to the Ever Given (excellent point about its max tonnage, btw).

20,000 TEU at 38 m^3 is 760,000 m^3 or the equivalent of 190,000 E:D cargo canisters, compared to the 25,000 maximum inside a Drake class carrier. And remember - I said 4 m^3 per cargo canister, so the Drake class carrier has an internal volume of 100,000 m^3 set aside for cargo canisters (let's double that for handling robots, and say 200,000 m^3 ).

And yes, Drake class carrier has to carry other ships. I don't have to measurements for a Drake carrier, but the Federal Capital Ship has an internal volume of 71,519,300 m^3.
The Drake has 16 landing pads (4x small, 4x medium, 8x large).

A large pad hangar has a bounding box volume (the six sided box needed to envelope it completely) of 213 x 128 x 50 meters (the Beluga is 45.5 meters tall, so let's add a bit of space) for a total of 1,363,200 m^3. The medium pad is 150 x 90 x 25 meters (the height of the Type-7 is 25.4 meters, which is why it needs a large pad) for a total of 337,500 m^3. The small pad is 66 x 55 x 14 meters (the Diamondback Explorer (small pad) is 13.6 meters tall and the Keelback (medium pad) is 14.6 meters tall) for a total of 50,820 m^3 . As such we need 8 x 1.4 million m^3 + 4 x 400,000 m^3 + 4 x 60,000 m^3 to store those ships inside (I'm adding the padding space for walls etc.). That is a total of 13,040,000 m^3. Less than 20% the internal volume of the Federal Capital Ship, which is a km shorter but only a slightly wider.

Notice that a single medium pad hangar is almost twice the size of the entire cargo space of a Drake class carrier. Not the large pad - just the medium pad. Does that not seem odd to you? Does that seem like a tiny amount of cargo to be able to carry? A ship THAT big, and you can't even set aside a single large pad hangar for cargo storage and up the capacity at least five-fold.
 
And yes, Drake class carrier has to carry other ships. I don't have to measurements for a Drake carrier, but the Federal Capital Ship has an internal volume of 71,519,300 m^3.
The Drake has 16 landing pads (4x small, 4x medium, 8x large).

The number of ships a carrier can carry isn't limited by the number of pads!
 

Robert Maynard

Volunteer Moderator
And remember - I said 4 m^3 per cargo canister....
Which begs the question: "how big does a cargo canister need to be to carry 1t of Hydrogen" - if the hydrogen is in natural form, it takes a storage volume of between 13.1m³ and 14.1m³ to accommodate one tonne - then there's the containment system itself to think about.
 
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