Speed Measurements:
Regions per Hour (rph)
A "region" being the distance from one edge of a region, to the opposite edge of a region, traversed east to west or west to east.
Barrels per Hour (bph)


Note: These charts are only for 2-speed. 1-speed is exactly half of both speed and consumption. FULL POWER is 1.75 x speed and 2.00 x consumption.

Merchant Cruiser (W:5000)
Engine (Eff%)   	   Speed (rph)	    Consumption (bph)
5000 Power (60%)                75	    70
5000 Power (50%) 	        75	    87
3500 Power			63  	    122
2500				54  	    88
2000				48	    70
1800 (20%)			46  	    50
1500				43	    52
1000				38	    35
 800				36	    28

Frigate (W:3000)
Engine (Eff%)   	    Speed (rph)	    Consumption (bph)
5000 (50%)			82	    87
3500				68	    122
2500				60	    88
2000				53	    70
1800 (10%)                      52	    57
1500				48	    52
1000				43	    35
 800                            41	    28
 
bph barrels per hour
rph regions per hour

consumption ~ power/28.5 bph

alternatively, the exact formula:
    consumption = power/1000 % per second at 2 speed
Any differences between the measured data above and this formula is likely the result of stuttering/fluctuating fps.