Does that difference, and being controlled by the parent ship, explain the lower range and endurance of the MH-60 (various models) compared with the Merlin which was designed from the outset as an ASW aircraft for the Royal Navy and the Italian Navy?
The WG34 picture in this
archived article from 1978 looks very Merlin like - with three engines, a radome under the nose, and so on. Perhaps this could stop some contributors insisting that the RN did not want it? By pure coincidence, the Sea Harrier and its role against Soviet Bears doing long range targeting for submarine launched missiles is also mentioned.
Anyone would think that naval AAW and ASW are connected....
@Not a Boffin is that link of an interest to you?