Learn to "Speak Like A Pirate"

In this series we are going to learn to speak like a pirate using some stereotypical pirate phrases. As you locate each cache booty, shout out the phrase as you sign the log.
#2 : Ahoy, Me Hearties!
(Hello crew members)
This is a very simple multi-stage cache requiring you to calculate the final coordinates based on information that you gather at the published coordinates.
At the published coordinates is a map sign.
The final coordinates for this multi-cache can be found at:
North 51° 26.(B+C)(D-C)(A+B+C)′
West 000° 53.(D-A)(D)(D+C)′
where
A = The lesser of the two numbers located at South Lake;
B = The greater of the two numbers located at South Lake;
C = The number of railway stations shown on the map;
D = The number of roundabouts on the map.
Acknowledgements
This cache was placed by Piratemania 16 Dinton Pastures - Eight Bells Nigh!
Please note - this cache is placed with the kind permission of Wokingham Countryside Service.