snrdg121408 wrote: ↑
Building Ships

1. Custom hull with

**mass displacements** other than the hull sizes shown on the drive potential table are treats as the next larger hull size. The maximum hull possible in these rules is 5,000 tons."

IIRC mass is measured, using the metric system, in grams, kilograms, and metric tons.

If I am remotely in the ball park the scout/courier is 100 metric tonnes.

It's a displacement (volume), not a mass:

LBB2'81, p13 wrote:
The Hull: Hulls are identified by their **mass displacement**, expressed in tons. As a rough guide, one ton equals 14 cubic meters (the volume of one ton of liquid hydrogen).

The Scout is 100 displacement tons (≈1400 m³), not 100 tonnes.

If we take a peek at MT, where mass of spacecraft is specified, the Scout is very roughly 1000 tonnes.

snrdg121408 wrote: ↑
On CT LBB 2 1977/1981 page 17 a sand canister weighs 50 kg or 0.05 tonnes.

Jumping back to page 21 Deck plans has the following information: "...The preferred scale for the interior should be 1.5 meters per square, with space between decks put at about

**4.0** meters. One ton of ship displacement equals approximately 14 cubic meters. Therefore one ton equals about two squares of deck space...."

Yes, but 3 m deck height, not 4 m.

snrdg121408 wrote: ↑
A CSC autodoc is 500 kg which is 0.5 metric tonnes which appears to mean the autodoc requires approximately 14 cubic meters x 0.5 = 7 cubic meters of 1 interior square of space.

It's not that simple.

1 tonne of steel is about ⅛ m³ or ~0.009 displacement ton.

1 tonne of water is about 1 m³ or ~0.07 displacement ton.

1 tonne of feathers is about 400 m³ or ~28.5 displacement ton.

We can't say how large an object is just from its mass.