## 3 Electrode Station Configuration
### Tenth Electrode Station Configuration  
_Straight Frames Adapted Perimetrically to a Central Base_  
This configuration uses the standard straight frame of the basic configuration (\(N_{el\_frame}\) = 13, \(\ell_{p}\) = 0.50 m, \(\ell_{f}\) = 6.00 m). For the case of Korakia, the minimum distance between the frames \(ds_{c}\) has already been calculated as equal to 11.0 m according to Equation (39). From Equation (52), the distance \(\ell_{1}\), equal to 6.3508 m, is calculated, and from Equation (53), the distance \(\ell_{2}\) is calculated as equal to 16.4727 m, which is identical to the minimum \"gross\" radius of the central base \(R_{K2}\) (by Equation (54)), due to the six frames. Therefore, the selected \"gross\" radius of the central base \(R_{K2}\) is equal to 16.5 m, which also includes the distance \(d_{r1}\) at which each frame is positioned, away from the central base (specifically, 1 m), for the suspension of the frame. For the case of Skachtoroi, the minimum distance between the frames \(ds_{c}\) has already been calculated equal to 8.0 m according to Equation (39). From Equation (52), the distance \(\ell_{1}\), equal to 4.6188 m, is calculated and,  
Figure 31: Location of an electrode station, with 6 straight frames, adapted radially to a central base with guides (9 th configuration), in the area of Skachtoroi, with base radius \(R_{K1}\) = 8.0 m (according to Figure 18), ensuring the appropriate depth for placing the frames and the necessary distances from the shore, for an equivalent electric field strength in the water below 1.25 V/m compared to the 1 st configuration. from Equation (53), the distance \(\ell_{2}\) is calculated as equal to 13.5329 m, which is identical to the minimum \"gross\" radius of the central base \(R_{K2}\) (according to Equation (54)), due to the six frames. Therefore, the selected \"gross\" radius of the central base \(R_{\rm K2}\) is equal to 14.0 m, which includes the distance \(d_{r1}\). From the respective simulation, the results of Table 9 are obtained, where the corresponding parameters of Table 8 are listed. Additionally, the boundaries of the canvas have been extended as in the case of the ninth configuration. In addition, various outer \(R_{\rm K2}\) and inner \(R_{1}\) central base radii are examined. Indicatively, Figure 32 shows the electric field strength and the area of developing electric field strength greater than 1.25 V/m for the most unfavourable scenario for the Korakia area, with five frames operating (sixth frame out of operation, under maintenance conditions). From the study of the results for the region of Korakia, the following emerges:  
* The length of the critical zone, from the centre of the arrangement, reaches up to 58.54 m in all directions depending on the way of uneven loading of the station (which is, practically, the same as the results in radially adapted frames to a central base). Proper placement of the arrangement at the 12.0 m isobath ensures that its centre will be more than 60 m from land, and a slight dredging ensures that the frames will be at a depth of more than 10 m, ensuring they are kept away from breaking wave water. * The deviation in the maximum developing electric field strength of the electrode station compared to a single frame (24.94 V/m against 24.06 V/m, according to Table 10 in [2]) is of the order of 3.74%, which is small, slightly larger compared to the seventh configuration (24.84 V/m of Table 6) and smaller compared to all previous ones. * In Figure 32b, regions between the electrode frames are shown, where the electric field strength decreases significantly below 1.25 V/m. However, this does not occur in the area of the frame that is set out of operation, although it does not exceed the value of 2.21 V/m, which is below 2.5 V/m. Therefore, no issues arise (regarding the safety of the diver) when maintaining the frames.