Absalon F341 main overhaul 2022


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Stability update and a new wepon system for close in targets.


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This site was last updated 08/29/22

 During 2022, the frigate F341, has undergone a significant update, stability has been improved and close in defense capability has been enhanced with the installation of a Laser CIWS





After examining the original stability tests, it was clear that stability needed to be improved. The main batteries have been replaced from 4 x 51Ah NMC cells, to 4 x 12 x 3.2Ah NMC 18650 cells. thereby they could be placed right down at the keel.

Ammunition is then placed along the entire keel, also to lower the center of mass. The ammunition is the remains of cal. 22 as well as 9mm from a shooting range, this is used because it is made of lead, and has a suitable grain size.

afterwards the ship is completely stable. The video (if clicking on the left pix. is it without stabilization fins)


Link to video Balast material. Balast midship cal22.  

Laser CIWS

Link to 3D

Denmark is known for having one of the absolute best companies that designs and develops high-quality laser components, therefore it is obvious that the F341 is updated with a laser defense weapon. LASER Close in Weapon System

In Denmark we do not manufacture high power laser weapons, but only the laser unit itself. The chosen LASER is a medium power 30kW laser and has a coherence length of > 30 ship lengths. If the target is moving at low speed, then the LASER can be used at up to > 50 ship lengths.

The actual laser is a red 650nm semiconductor laser, in real life I would chose a Low noise and narrow linewidth 532nm laser from NKT Photonics unit (fibre laser modules with close to diffraction-limited beam quality) with a power amplifier from Rheinmetall in Germany. The selected LASER has a total efficacy of more than 30% that means that for every 1kW electrical input power, the LASER generates more than 300W single line optical light power, because of that a very compact and agile system is implemented.