The following brethren were invested with Royal Ark Mariner Grand Rank at the Royal Ark Mariner Grand Assembly Meeting in London on Tuesday 12th December 2017.
| Name | Lodge | Number |
|---|---|---|
| W.Bro David N Entwisle | Manchester University | 1001 |
| W.Bro Duncan M Ferguson | Rectitude | 18TI |
| W.Bro David J Rainsbury | Middleton | 1303 |
| W.Bro George H Scaife | Skelmersdale | 141 |
| W.Bro Paul Waring | Good Report | 1309 |