The Sisu has two decks. The top deck has the bridge, staterooms, lounge, gym, galley and the small hold. The bridge and lounge are toward the bow. The owners stateroom and gym are next, followed by the passengers staterooms. Then the pilot's stateroom and the crew bunk room. The turret access (if installed) is located by the crew's bunk room. The lifeboats are accessed on the port and starboard sides in the middle of the passenger stateroom area. The lower deck includes the two large holds and the air raft hanger. Engineering is in a large open area in the stern of the ship (no top deck) with access to the jump drives, thrusters, contra-grav lifters and power plant. Fuel is stored all about the ship inside the hull.

The  Sisu has three cargo holds. Two are 20 tons, the third one varies, depending on the options selected, from 15 tons to 21 tons. The two 20 ton holds are able to be sealed and used to carry extra fuel. Pumps and pipes are included to move the fuel from the holds to the normal fuel tanks and from the fuel tanks to the holds. This gives the  Sisu the ability to use some of her cargo space for extra fuel to increase the jump range in less heavily traveled areas of space.

The standard price does not include the multi-function turret. You can include this turret at a cost of 348 KCr. A bunk is provided for the gunner in the standard design even if the turret is not purchased. A missile magazine containing 6 missiles is normally included in addition to the turret, so if the turret is  installed the cargo capacity in the small hold is reduced by 3 tons (to 15std). There is sufficient spacewithin the turret to install an optional 30kkm MFD (+5) for an additional cost of 1.6 MCr. Changes to the ships statistics when a turret is installed are shown in blue.