HHI KDDX class - Model for small scale printing 3D print model

The KDDX is a design of destroyer proposed by Hyundai Heavy Industries. This class of warships marks several changes in design for the Republic of Korea Navy. The KDDX will be the first class of destroyers entirely designed with indeginous systems, not using any off-the-shelf systems from other nations. This includes propulsion, radar and sonar, as well many pieces of weaponry. Overall, the ships of the class will displace roughly 9.000 tons at full load.

As show at the MADEX in 2023, the vessels are planned to use a fully electric drive, powered by gas-turbine and diesel generators. This change in design to more conventional approaches allows the ships systems to demand more power, relocating power from the propulsion to defensive or offensive systems once needed. This also ensures that future refits are possible, as a higher requirement in power is expected. A completely new system emplyed onboard the class is the I-MAST from Hanwha Systems, using two radars working in parallel. A S-band radar can detect threats at a great distance- up to ballistic missiles- whilst the X-band radar is primarily used for short-range tracking. This new system, combined with the dynamic relocation allows the ships to increase survivability in battle.

As offensive weaponry, the class employs a US-built Mk45 5-inch gun, as well as several own designs. The traditional VLS is replaced by a KVLS with 48 cells, firing L-SAM missiles for air defence and cruise missile interception. Noteworthy is the placement of the second 16-ell KVLS, being behind the main mast and off the first funnel. Furthermore, eight C-Star anti-ship missiles can be fired from amidships. For sensors, a newly designed Multi-Function Towed Array is used, as well as a towed active array. To use these arrays as efficiently as possible, several types can be deployed, making the class highly versitaile.

The first unit will be laid down in early 2024, the construction of all six planned units will take up to the early 2030s. Currently, all six units are planned to be commissioned until 2036. It is expected that this class will serve in a role like the Arleigh-Burke class of destroyers, meaning escorting carrier Task Forces once the CVX-program has been completed.

Note: This model is recommended to be used in the 1/2000 scale. The models itself isnt scaled, the scale table is down below.

1/4000: 3,9cm or 1.535in

1/3000: 5,2cm or 2.17in

1/2000: 7,8cm or 3.07in

1/1000: 15,6cm or 6.14in

For self calculation: The KDDX will be roughly 156m or 512ft long.

The model is intended to be used with little supports as possible, yet some are recommended below the cranes. Be carefull when removing the support structures, as some details can be quite fragile. I recommend using a resin printer for this. Up and Downsclaling might be possible, yet I dont know to what extend.

If you face issues with the model, have questions or want to propose some changes, please reach out to me, I am always happy to help. I am also open for suggetions for new ships which I havent done yet, as I am looking to expand my catalogue of ships.