Elderslie Steam Ship Co
1884 the partners in Turnbull, Martin and Co joined with other Glasgow investors to set up the Elderslie Steam Ship Co Ltd to enter the New Zealand trade, managed by Turnbull and Martin.
1910 Elderslie was taken over by a new company, Scottish Shire Line Ltd. Cayzer, Irvine and Co Ltd acquired a controlling interest in the new company, the balance of the shares being held by ex-Elderslie shareholders. Turnbull, Martin became the managers.