This might make some Forumites sit up and take notice!
From the Teesside Branch WSS Albert Weller Collection.
MELLO, Soc. Geral de Comercio Industria e Transportes, Portugal, 4372gt,
completed at Blyth 4-1915, 1915 HEBBURN - 19 GRAZIELLA - 22 MELLO -
wrecked 33.41N/7.26W 27.11.64 [Lisbon-Casablanca, ballast]
For further details of her loss George pointed me towards Marine News for January 1965. The MELLO went aground at the entrance to the River Mellah (some slight irony there?) on 27 November 1964, while on passage between Lisbon and Casablanca, and became a total loss. So she survived fully 49 and a half years.
Interesting also that she was built originally for Huddart Parker, London.