Your article on Qinetiq's Sentry surveillance craft (The Big Picture, 1 October) was interesting.
Amusingly the photograph accompanying it (perhaps because it was a sea trial) shows this vessel of 'speed and agility' displaying the internationally recognised shapes for 'a vessel restricted in its ability to manoeuvre'.
Martin Figg
Weymouth
UK productivity hindered by digital skills deficit – report
This is a bit of a nebulous subject. There are several sub-disciplines of 'digital skills' which all need different approaches. ...