Regarding the PoAF Merlin operation question: generally 60ft.
The pilot flies the aircraft.
From the operational point the view the EH-101 "Merlin" is very well loved in the portuguese ranks. For long-range SAR thereīs no other machine like it. Itīs expensive? Oh yeah. But itīs the best available. At least for the portuguese requirements and their massive SRR (the biggest in Europe, more or less 6.000.000 Sq Km).
You can visit 751 Squadron page on facebook:
www.facebook.com/esquadra751
Cheers,