Mnemosyne - a picture of Solar System in the 27th century

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Kuiper Hegemony’s “gear shifting” space fighter/pursuer Persecutor:

Drive type: D-He3 fusion pulse
Maximum Isp: 800 000 s
Thrust power at maximum Isp: 196.2 GW
Thrust power at minimum Isp: 490.5 GW (higher power is possible at low Isp because of propellant cooling)
Mass ratio: 1.7
Total mass: 51 t
Dry mass: 30 t
Fuel mass: 21 t
Kinetic energy at maximum speed (4162.95 km/s):
Pure fusion mode:
Thrust power: 196.2 GW
Isp: 800 000 s
Thrust: 50 kN
Acceleration (fully fueled): 0.1 G
Acceleration (empty tank): 0.17 G
Propellant mass flow:

Short range travel mode:
Isp: 400 000 s
Thrust: 100 kN
Acceleration (fully fueled): 0.2 G
Acceleration (empty tank): 0.34 G
Propellant mass flow:
Mixed mode:
Isp: 200 000 s
Thrust: 200 kN
Acceleration (fully fueled): 0.4 G
Acceleration (empty tank): 0.68 G
Propellant mass flow:
In the pure fusion mode, only plasma resulting from the D-He3 reaction itself is used for thrust. In the travel and mixed mode, small amounts of reaction mass are added to boost the acceleration to levels suitable for quickly leaving planetary orbits, lowering the specific impulse to still very high, but worse levels. In planetary atmospheres, it can adjust its drive to use air as reaction mass and use smaller fusion pulses.
Chase mode/orbital maneuvering mode:
Thrust power: 392.4 GW
Isp: 100 000 s
Thrust: 800 kN
Acceleration (fully fueled): 1.6 G
Acceleration (empty tank): 2.72 G
Propellant mass flow:
Attack mode:
Thrust power: 490.5 GW
Isp: 50 000 s
Thrust: 2 MN
Acceleration (fully fueled): 4 G
Acceleration (empty tank): 6.8 G
Propellant mass flow:
This mode injects a lot of reaction mass into the engine to increase the mass flow, dramatically increasing thrust and cooling efficiency, enabling a boost to thrust power but increasing fuel consumption, useful for situations such as pursuits where high thrust is desirable, and long range is not needed, or when a quick escape or lift off from a planet is necessary.
High-G (Kamikaze) mode:
Isp: 10000 s
Thrust: 10 MN
Acceleration (fully fueled): 20 G
Acceleration (empty tank): 34 G
Propellant mass flow:
Generally only used when ramming enemy ships, this mode produces bone-crushing acceleration good for making that final plunge into the enemy ship when no other option is available, Kamikaze style.
Note these are just the main drive modes as in use by the Kuiper Hegemony, Isp and thrust can be adjusted at will.
Classified report of the Mercurian Federation of Free People:
Information about the Persecutor space fighter, codename Skimmer:
The craft has reached levels of drive miniaturization previously though impossible, despite its small size, it utilizes power amplification technology, enabling enormous amounts of thrust, apparently through the use of extremely heat resistant materials and high efficiency magnetic nozzles, along with disregard to pilot safety, these craft can masquerade as civilian craft for months to years, keeping the pilots in hibernation, upon awakening, they’re capable of devastating hit and run attacks. The sight of a Skimmer fighter venting coolant, with radiators glowing white hot, has became a new symbol of terror in the outer system, as the weapon systems often slightly overheat the craft, meaning a glowing fighter venting coolant has just finished executing a raid.

Jupiter’s express passenger ship Jove:
Drive type: D-He3 fusion pulse
Maximum Isp: 800 000
Thrust power: 6.71 TW
Mass ratio: 2
Total mass: 2500 t
Dry mass: 1250 t
Fuel mass: 1250 t
Pure fusion mode:
Isp: 800 000 s
Thrust: 1.72 MN
Acceleration (fully fueled): 0.06 G
Acceleration (empty tank): 0.12 G
Propellant mass flow:

Medium range travel mode:
Isp: 400 000 s
Thrust: 3.44 MN
Acceleration (fully fueled): 0.12 G
Acceleration (empty tank): 0.24 G
Propellant mass flow:
Short range travel mode:
Isp: 100 000 s
Thrust: 13.76 MN
Acceleration (fully fueled): 0.48 G
Acceleration (empty tank): 0.96 G
Propellant mass flow:
Rapid maneuver mode:
Isp: 25 000 s
Thrust: 55.04 MN
Acceleration (fully fueled): 1.92 G
Acceleration (empty tank): 3.84 G
Propellant mass flow:
The Jove can carry 300 passengers in the waking accomodation configuration or several thousand passengers in the hibernation configuration at high speed through the whole Solar system, however it isn’t really fit for trips to the Oort Cloud although it can technically do them, unlike slower ships seats on it are often hard to get even in the moneyless economy of Jupiter’s moons. If you can travel on Jove, you’re likely at least a somewhat important person.

Independent cargo hauler:
Total mass: 12000 t
Fuel mass: 6000 t
Structural mass: 1000 t
Payload mass: 5000 t
Mass ratio when full: 2
Mass ratio (no cargo, full fuel): 6
Delta v at max Isp: 3398.73 km/s
Maximum specific impulse: 500 000 s
Thrust power: 5.8 TW

Freight mode:
Isp: 500 000 s
Thrust: 2.35 MN
Acceleration (fully loaded and fueled): 0.02 G
Acceleration (fully loaded, dry): 0.04 G
Acceleration (no payload, fully fueled): 0.034 G
Acceleration (no payload, dry): 0.24 G
Orbital mode
This trader's cargo hauler isn't too fast and doesn't accelerate too well, but it can carry a huge amount of cargo up to Uranus and back without the need to refuel, thus eliminating the risk of the other party in the trade not obeying their part of the deal.

“Space bus”:
Total mass: 200 t
Dry mass: 100 t
Fuel mass: 100 t
Mass ratio: 2
Max Isp: 450 000 s
Thrust: 59 kN
Thrust power: 130.23 GW
Average acceleration: 0.04 G
Acceleration (fully fuelled): 0.03 G
Acceleration (empty tank): 0.06 G