The cache is not at the posted co-ordinates.
Solve the puzzle to find the actual location. Use the checker as it gives details of the hide.
Kirk: For people in Scotland and Northern England this may refer to a Church. Some people may fondly remember a famous Kirk, actor Kirk Douglas. But, for a hint to this cache everyone should think of a Captain
The cache is located at N50 22.(A*B*C*D) +505 W004 08.(A+B+C+D) +616
You can validate your puzzle solution with certitude.