CHF - Merlin Mk 4

[dangermouse]

sonar etc

I am afraid jamesdevice that your historical knowledge is unsound


The basic EH101 Integrated Development Project was to develop several variants of a common helicopter;

Civil
Utility
MMI naval
RN naval

Of the above variants only the MMI aircraft was required to have a dipping sonar capability, the RN variant was exclusively a Sonobuoy user, fitted with provisions for but not with a sonar.

as the IDP was approaching closure the UK decided that the aircraft that had been developed against the IDP requirements was not what was wanted and a more capable aircraft (later named Merlin) was required. This had RTM322 engines an increased AUM and a dipping sonar.

DM