My query relates to the sentence that follows that:
"A ship that is detected at Night or during Bad Weather will automatically be spotted by the ship that detected it as soon as it moves into spotting range".
and under night battles
"Once an enemy ship is within 20" or less of a friendly vessel, make a command check with a target number of 8. Success means that the enemy ship has been spotted and may be attacked normally by any friendly ship within 20", as its location will be communicated to allies. Once a ship has been spotted, it will remain so until it moves more than 20" away".
The situation was that the Scharnhorst detected (not spotted) the enemy BB at approx 36", so knows it is there, but apparently cannot shoot at it, until it has actually been spotted. The section in radar says once you have been detected, and move within 20" you are automatically spotted.
JP did the honourable thing and fired his Warspite's big guns, removing one of my cruisers instead, allowing me to spot the gun flashes at long range! The "lucky ship" (Scharnhorst) was still there at the end of the game.
I must admit , we originally read it the same way as your initial response. But I cant help feeling that was not correct.
Trev