Power Management onboard the freighter
(refer to deck plans for freighter: http://www.albinjohnson.com/starfrontiers/starships/sfships.html )
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Power is stored in batteries located near the two onboard generators. A portion of energy from the
engine reactors are routed to the batteries to keep them fully charged. When the engines
are working normally, the batteries stay fully powered. When the engines are off-line, the batteries operate
from their stored energy. 

Generators operate to provide electrical power to the non-engine parts of the ship. Generators draw steady power
from their batteries and shunt that power to the power relay station, which energizes sub-systems
on all decks. During normal conditions, the relay station maintains normal power to all areas based on settings
made locally or at either of the two engineering stations. Priority of control falls to the primary engineering
section, secondary engineering controls, and then the relay station itself in that order.

The size of the batteries determines how much power it has to deliver. During normal conditions, that power is
enough for all sub-systems for which it is designed. When the engines are not replenishing the batteries, the
power store begins to drain. All subsystems use the power equally. Power may be diverted to subsystems as needed.

If the generators are damaged, then power levels may drop. Power may be re-routed to subsystems as needed.

For our example, there are 45 sub-systems on our hull-size 6 vessel.

Say the main battery has 50 power units in it. The backup battery has 25 units. 

Say the main generator is able to route 50 units of power at a time. The backup generator can route 25 units.

Only one generator can operate at a time on an electrical system. Switching between one generator to another
takes three turns and can be done at either engineering station or the power relay station.

Proposed simplified system: every time the ship is hit, the damage translates to less power available to the
ship and its subsystems. Ship damage counts against the max. power offered by the generator (or backup, depending
on whichever is being used). If the power units drop below the number of sub-systems, the referee can roll 
which systems lose power. The crew can re-route power to whatever systems they want, but at least it's 
sustainable and will not drop unless more damage is suffered by the ship.

If one of the generators itself is damaged then power comes from the batteries and diminishes over time.
Let's say that the power drops by 1 unit every turn if the ship is under duress (such as in combat).
If the ship is not under duress (flying normally, not in extreme conditions or combat) then power drops
by one unit every hour. 

Not sure what the damage-to-ship vs damage-to-system would be. Need to research KH rules more.

Example:
If a ship is hit for 1 point of damage, that 1 point counts against the max power. If operating off the main
generator, then instead of 50 units there would only be 49 available. This remains steady while the generator
is working. If the generator is hit, then the 49 units available will begin to drop. If the ship is in combat, 
then the level drops one unit every turn. After six turns then there would only be 43 units available. The 
ship has 45 sub-systems, so the referee would roll two times and choose two different systems that shut down.
The engineer can divert power from one system to another. Each diversion takes one full turn. At any point
the engineer can switch to the back-up generator which is working and will not drain the back-up battery,
but only 20 units of power will be available. The engineer would be wise to wait until the main battery is
down to 20 units before switching to auxiliary.

Ship Sub-system Table
1 - Deck 1 - Pilot Controls
2 - Deck 1 - Co-Pilot Controls
3 - Deck 1 - Main Computer
4 - Deck 1 - Astrogation Panel
5 - Deck 1 - Radar
6 - Deck 1 - Life Support Controls for the ship
7 - Deck 1 - Communications / Sub-space Radio
8 - Deck 1 - Hull Cameras / Videocom
9 - Deck 1 - Engineering Controls
10 - Deck 1 - Hull Skin Sensors
11 - Deck 1 - Elevator
12 - Deck 1 - Life Support for Deck 1
13 - Deck 2 - Lights for Deck 2
14 - Deck 2 - Life Support for Deck 2 (temp/air)
15 - Deck 2 - Doors for Deck 2
16 - Deck 2 - Food Dispenser
17 - Deck 2 - Holovid Projector
18 - Deck 2 - Backup Life Support Equipment
19 - Deck 2 - Airlocks and Hatches
20 - Deck 3 - Lights for Deck 3
21 - Deck 3 - Life Support for Deck 3 (temp/air)
22 - Deck 3 - Doors for Deck 3
23 - Deck 3 - Life Support Equipment for Entire Ship
24 - Deck 4 - Lights for Deck 4
25 - Deck 4 - Life Support for Deck 4 (temp/air)
26 - Deck 4 - Doors for Deck 4
27 - Deck 4 - Laser Battery
28 - Deck 4 - Shuttle Doors
29 - Deck 5 - Lights for Deck 5
30 - Deck 5 - Life Support for Deck 5 (temp/air)
31 - Deck 5 - Doors for Deck 5
32 - Deck 5 - Pod 1
33 - Deck 5 - Pod 2
34 - Deck 5 - Freight Station
35 - Deck 5 - Machine Shop Power
36 - Deck 5 - Robot Station
37 - Deck 6 - Lights for Deck 6
38 - Deck 6 - Life Support for Deck 6 (temp/air)
39 - Deck 6 - Powered Doors to Engines
40 - Deck 6 - Engineering Controls
41 - Deck 6 - Power Relay Station
42 - Deck 7 - Lights for Deck 7
43 - Deck 7 - Life Support for Deck 7 (temp/air)
44 - Deck 7 - Cargo Doors
45 - Deck 7 - Cargo Arm