FT: my campaign's fuel rules

My ideas are based on Traveller's fuel requirements, although I reduced it
down somewhat (5% instead of 10% per Jump x mass). Maneuver fuel isn't
considered, I considered it to be part of the mass of the thrust drives.
Besides, it would slow down the tactical combat and I wanted fuel rules for
strategic purposes.
I also reduced the FTL drive mass to 5% x mass so that a FTL-1
drive with my fuel rules would take up the same amount of space
as the regular FTFB FTL drive (5% + 5%).
The FTL drive is more expensive, this gives more incentive to save ships from
destruction and build battle riders. I reduced the space for streamlining by
half, partial = 5% of mass and fully = 10% of mass. FYI, each "hex" is a
parsec in length, so star systems tend to be from 1 to 3 hexes apart.
Depending on the density of stars there is probably a star in each hex but
many will not have planets. Each star hex has one main planet and possibly a
symbol representing one or more gas giants that are in the hex. FYI, a
"faction" is each player controlling part of an empire that just went into
civil war. He who controls 50% or more of the planets gets to be crowned as
the new emperor (and the winner of the campaign).

You asked for them, you got them. My fuel rules lifted verbatim from my
campaign document:
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Movement option 2
Movement between star systems is conducted with one-week long jumps,
no matter the distance of the jump. A ship can jump to any hex within its FTL
drive range. The fuel required is 5% of the mass of the ship times the
distance jumped. Thus a ship with an FTL drive distance of
4 (FTL-4) would require 20% of the mass of the ship in fuel.  The mass
of the FTL drive is 5% of the mass of the ship (minimum of 1) and the cost is
equal to the drive mass times 2 times the maximum distance that can be
traveled. The cost for the space for fuel is 0.

Example 1: a 100-mass ship has a FTL drive that can jump four hexes,
the mass is 5 and the cost is 40 (5 x 2 x 4). The fuel space required is 20
(100 x 5% x 4).

Example 2: a 60-mass ship has a FTL drive that can jump six hexes, the
mass is 3 and the cost is 36 (3 x 2 x 6). The fuel space required is 18 (60 x
5% x 6).

The FTL drive box on the ship diagram will have a number in it representing
the maximum distance that can be jumped. Underneath the FTL drive box write
down an "f" for each hex of FTL travel the ship can jump, this represents fuel
space and they suffer threshold checks. These cannot be repaired using the
normal damage control but are repaired when the ship is refueled. When a ship
jumps also mark off the number of "f"s equal to the distance jumped.

Example 3: a ship with FTL-4 jumps two hexes into a star system.  The
player marks off two out of the four "f"s before combat begins. Thus the ship
can only make a jump of one or two hexes if it flees the combat and has not
taken any more hits on its fuel spaces.

Fueling (optional) Fueling adds a little logistics to movement strategy. If
Fueling rules are not used then consider all ships to refuel after any combat.

Spacecraft need lots of fuel to travel FTL. Fuel consists of hydrogen that can
be found in gas giants and water on planets. After making a jump a ship may
need to refuel to jump again. A streamlined ship can refuel in no time at a
gas giant or a planet with water, a partially streamlined ship can refuel in
no time at a gas giant, any ship can refuel from another ship in no time, some
ships can refuel from spaceports or bases in no time, otherwise the ship
requires a full movement phase to refuel.

Spaceports can refuel a limited number of ships in no time:
1. Class A - 8 ships
2. Class B - 4 ships
3. Class C - 2 ships
4. Class D - 1 ship
5. All others - 0 ships.

A base refuels all ships in no time.

The faction must either control the planet or get the planet's owner's
permission to refuel from the planet, base, or spaceport.

Some star systems have neither planets with water nor gas giants. Ships will
need extra fuel space or get refueled from other ships.