Sub-Atmaca will have a smart capsule that has propulsion. The smart capsule is like an empty torpedo that can carry a missile to a pre-programmed destination. This way the submarine can stay under the thermocline layer and the missile surfaces a safe distance away from the submarine. Those two things are major advantages for the submarine to stay undetected.
There is no news on whether Gezgin will have a smart capsule or not. Both Tomahawk and MdCN use the TACTOM approach. The missile is put in a capsule like the Pringles can and launched from the torpedo tube. It goes mostly vertically to the surface and the booster engine starts. With the TACTOM approach, you can only launch missiles above the missile depth and capsule surfaces near the submarine. Gezgin is a heavy cruise missile so it might not get a smart capsule similar to sub-Atmaca.
I expect Gezgin to be lighter than Tomahawk. The diameter of the missile should be around 500mm. The launch weight with the smart capsule or launch capsule+booster should be around 1500kg. I expect the Arat turbojet engine to have a lot better fuel economy than the TR-50 but It will certainly fall short of F107-WR-402 turbofan. There are also plans to launch Gezgin from land platforms and the fighters. I expect the weight of air-launched Gezgin to be around 1000kg
Gezgin air-launched ~1000kg (it should be air-launchable from F-16 pylon 3,4, 6 and 7 though F-16 can only pull 5.5 G if the missiles are loaded in pylons 3 and 7)
Gezgin+solid booster/Gezgin land-launched (1200-1300kg, a solid booster with a weight of %20 of the base missile will be enough to give the missile the initial boost)
Gezgin+solid booster+capsule/ Gezgin submarine-launched (~1500kg, similar weight to the Akya heavy torpedo)
TR-50
Thrust: 250-340 daN (2.5 to 3.4 kN)
SPC: 2.64 lbs/daN/h (299kg per hour for 2.5kN and 407 kg per hour for 3.4kN thrust)
Dry Weight (depending on applications): 88-99 lb (40 to 45 kg)
Diameter: 11 in (280mm)
Lenght: 26.8 in ( 680mm
F107-WR-402
Thrust: 700 lbf (3.1 kN)
SPC: 0,683 lbs/lbf/h =1.54 lbs/daN/h ( 217 kg per hour for 3.1 kN thrust)
Dry weight: 67 lb (30kg)
Diameter: 12 in (300mm)
Lenght: 24in (610mm)
KTJ-3200
Thrust: 3.2 kN
SPC: 2.64 lbs/daN/h (SLS, Max RPM, includes bearing lubrication, 383 kg per hour for 3.2 kN thrust)
Length: 630mm
Diameter: 330mm
Weight: 50kg
KTJ-3700
Thrust: 3.7 kN
SPC: %10 better than the KTJ-3200 2,376 lbs/daN/h (SLS, Max rpm, includes bearing lubrication, 399kg per hour for 3.7 kN thrust)
Length: 630mm
Diameter:330mm
Weight: 50kg
KTJ-1750
Thrust: 1.75 kN
SPC: 2.64 lbs/daN/h (SLS, Max rpm, includes bearing lubrication, 209,5 kg for 1.75 kN thrust)
Length: 464 mm (609mm with a long nozzle for the Çakır missile)
Diameter: 202mm (227mm with pyrotechnic igniters)
Weight: 22.5kg
I expect Arat to have a thrust similar to KTJ-3700(3.7kN) and another %10 SFC improvement over KTJ-3700 (2.13 lbs/daN/h).