evidence: The Irish government complained to British ministers about the alleged harassment of vessels in Carlingford Lough by a patrol boat manned by Royal Marine Commandos, in 1991. [...] The Irish side wished to highlight the need for sensitivity on the part of British search parties on the lough, he said. [...] The memo noted that on 21 October 1991, the crew of one yacht, Gurlough, complained to the Irish government and made a number of allegations a boarding party of Royal Marines had searched it in Carlingford Lough.