patrol problem

[sert]

Hello,

First of all, excuse me for my bad English.

I installed the wolves of steel (silent hunter 5) and I have a problem interpreting this order received: patrol an 1814 radius 120 km x 24 hz

1) I can't understand if the area 14 is a sub-area of the 18 or I have to patrol both an 18 and an 14

2) I did not understand x 24 hz

could you send me a photo of the patrol that i should perform?

thank you all for the availability

Hello