Ben Hur is not listed in Colledge & Dittmar's authoritative "British Warships of WW1" or in Colledge 'Ships of the Royal Navy".

The one mention I have found is in Carson Ritchies "Q Ships":

"During the summer (of 1915) the submarines C.26 and C.27 worked with the torpedo boat destroyer Express and with Taranaki, while the two submarines were also towed by the trawlers Princess Louise, formerly the Ostend trawler Princess Marie Jose, and the Wolsey. Other trawlers were teamed up with C-class submarines, including Ben Hur, commanded by Lieutenant Raikes RN and Vina commanded by Lieutenant Alexander Tarver. Both of these were working at Baltasound in the Shetlands"