There is nothing hidden at the headline coordinates.
To find the cache you'll need to complete both the SAVING LIVES AT SEA, EXMOUTH Adventure Lab and the EXMOUTH HOTELS PAST AND PRESENT Adventure Lab.
You will be given information when you successfully answer the questions in the Adventure Labs which will enable you to work out the coordinates for the final cache hide which is situated at:
N50 BD.EAC
W003 VW.XYZ
Wheelchair users should hopefully be able to get to GZ and access the cache as it is within reach of the path.