I rememberthe old N.U.S.as a usefull tool . When chief engineer of one 2 year old british ship running to the baltic in winter our central heating system packed up, a simple repair job if I had the part impossible without. Time after time I ordered the part from the owners to no avail. A discreet word to the N U S rep at hull that the crew were freezing and guess what , the part arrived the following day. Both the skipper and I had tried the MNAOA without any result, and the owners said if the crew complained again to give them 48 hrs notice before the next UK port as per running agreement and that they would find a less delicate crowd