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Bebop 268170
(Exterior)

Exterior View
excellent front view of Bebop 268170

Unfortunately, there is no complete drawings of the Bebop 268170 or cutaway diagrams of it except in the art books or Starting Book. All that is shown in the sessions are distance shot or part-views of the ship. Thus, because of the lack of details all the information here are based on my assumptions. Corrections are welcome.
From session nine, it can be gathered that the Bebop 268170 is a reconstructed interplanetary spaceship, originally a fishing boat that may have been originally based on Ganymede II, privately used for bounty hunting.  It is designated STSSD-31(61B), a duration of 6835 days, has a launch weight of 3,460,865 LB (1,567,772 kg) and a launch length of 475.6 feet (142.7m). It is armed with 2 x power hands and 2 x rocket anchors. It carries three ship planes: Swordfish II, Hammerhead and the Redtail. It has a crew of 4 + 1: Spike Spiegel (m), Jet Black (m), Faye Valentine (f), Edward (f) and Ein, a dog. 
From the TV series, it can be seen that the Bebop 268170 is obviously the worse for wear. Practically all exterior close-up views of the vessel show it smudged, chipped and should I add, rusted? Not only that, things frequently breakdown in the ship (in some hilarious scenes, the fan shorts out suddenly). Bebop 268170 is propelled by four massive engines located to port and starboard of the main hull.
After watching session 19 Wild Horses over and over again I realize that the Bebop 268170 has 6 engines, not 4. Four are placed in the stern while an additional two are placed parallel to the raised upper hull section. The engine's exhausts close before entry into water (not intakes as I had originally thought).
As to ship arrangements, I believe the main central hull (from the bow to the part below the bridge) is where fuel or stores is kept. Living quarters is located rear of the 'spinning' ring thing. I say this because whenever the Bebop gang wish to disembark to fly they leave via the circular hatch near the living room  to enter the 'spinning' ring thing and then to the right to enter the hangar bay.
Immediately below and in front of the bridge is the flight deck. It is long enough to allow the Swordfish II to take off in atmosphere  (though she cannot launch ships while flying in atmosphere, only while grounded).
After repeated viewing, I find that there is no catapult used in the Bebop 268170. Instead of a cat, it is only a hold-down clamp to hold the aircraft down before it is launched.   
The power hands have never been seen used while in space. Their use seem to be limited to lifting heavy objects into/out of the Bebop, for example lifting the Swordfish II from the dock onto the flight deck of the ship in session 19. 

underbelly view of 268170 an external shot of the bridge
engines nozzles closing for waterborne landing spinning 'cylindrical'  view. you can just make out the Bebop name on the upper left side.
hammerhead launching without catapult good view of hangar bay opened
another side view... right engine intake? no, forward engine thruster

Exterior View continued next page