## 3 Electrode Station Configuration
### General Remarks
3) & & & & & & & & \\ \cline{2-10}  & 5 frames operating & \multirow{2}{*}{22.00} & 22.00 & 48.06 & 46.40 & \(-\)57.25 & 61.67 & 2.57 & 26.14 & 24,775 & 21.23 \\  & 5 frames operating & \multirow{2}{*}{22.00} & 47.40 & 49.01 & \(-\)54.10 & 62.41 & 3.09 & 26.13 & 25,817 & 22.12 \\ \cline{2-10}  & 6 frames operating & \multirow{2}{*}{18.33} & 35.53 & 35.53 & \(-\)44.01 & 44.01 & \(-\) & 17.03 & 19,537 & 16.74 \\ \cline{2-10}  & 5 frames operating & \multirow{2}{*}{22.00} & 36.95 & 35.69 & \(-\)46.27 & 40.27 & 3.35 & 20.14 & 21,581 & 18.49 \\ \cline{2-10}  & 5 frames operating & \multirow{2}{*}{22.00} & 34.95 & 36.26 & \(-\)45.62 & 42.67 & 2.83 & 20.05 & 21,055 & 18.04 \\ \cline{2-10}  & 5 frames operating & \multirow{2}{*}{22.00} & 36.00 & 33.97 & \(-\)44.94 & 43.93 & 2.15 & 20.00 & 19,778 & 16.95 \\ \cline{2-10}  & 5 frames operating & \multirow{2}{*  
From the study of the results for the region of Stachtoroi, the following emerges:  
* The deviation at the extremes of the array (along the yOy/ axis) reaches up to 22.5 m, depending on the loading method, and along the xOx/ axis, it reaches up to 36.95 m (especially when the five frames are loaded, except for the sixth or first). However, in the area of the non-operating frame, the respective electric field strength is slightly above 2.5 V/m; therefore, no issues arise (regarding safety) when maintaining the frames, provided the diver has taken the appropriate measures. Figure 24: (**a**) Electric field strength, (**b**) area of electric field strength; blue denotes values lower and yellow denotes values higher than the limit of 1.25 V/m, with linear current sources, regarding an electrode station with the 4 th configuration, in the area of Korakia (\(\rho_{S}=\infty\), without dam, \(\rho_{w}=0.25\) M-m, \(\ell_{p}=0.50\) m, \(d_{fo}=11.00\) m, \(s_{c}=10.00\) m, \(L=2.13\) m, \(\theta_{g}=248^{\circ}\)), \(J_{mt\_st}=22\) A/m\({}^{2}\) (5-frame operation, excepting no. 5; steady state). * The deviation in the maximum developing electric field strength of the electrode station compared to a single frame (20.14 V/m against 17.96 V/m, according to Table 11 in [2]) is of the order of 12.14%, which is significantly greater than those in previous configurations (19.73 V/m for the first configuration according to Table 14 in [2], 19.08 V/m for the second one according to Table 1, and 20.03 V/m for the third configuration according to Table 2). * The critical zone of the dam extends beyond it by 31.0 m (with a crest width of 5 m and a suspension distance of at least 1 m) along the xOx\({}^{\prime}\) axis (perpendicular to the dam), which is slightly longer than the first configuration (30.3 m). * The critical zone of the dam extends beyond it by 42.54 m (i.e., 21.3 m on either side) along the yOy\({}^{\prime}\) axis (parallel to the dam axis) in the coastal area. Although the initially estimated required length of the assumed electrode station is 47.6 m (along the yOy\({}^{\prime}\) axis), the respective actual required length is 92.54 m (from the results of the superposition model in Table 3), while the available length is only 50 m.
* The developed absolute potentials and the corresponding values of the electrode station resistance, with respect to remote earth, are quite worse (21.58 kV, 18.49 \(\Omega\)) against the first (17.30 kV and 14.82 \(\Omega\) according to Table 15 in [2]) and second configurations (18.40 kV and 15.76 \(\Omega\) of Table 1), and slightly better than those in the third configuration (21.48 kV and 18.40 \(\Omega\) of Table 2). * In field behaviour results, there is a similarity in the case of single-frame non-operation, among the 1 st, 2 nd, 5 th, and 6 th frames, as well as between the 3 rd and 4 th, through an appropriate mirroring consideration. However, when determining the absolute potentials, there is a slight variation since the integration is always carried out on the Ox semi-axis. Summing up, the fourth configuration presents similar field results compared to the third.