Here, in alphabetical order, are the ports listed in the Crew Agreements for the 1862-built Crest during the first four years sailing under her new owner & Master, Alexander John Kerr:
Ayr, Mainland
Belfast, Ireland
Carloway, Lewis
Carrickfergus, Ireland
Castlebay, Barra
Gairloch, Mainland
Larne, Ireland
Loch Eishort, Skye
Lochmaddy, North Uist
Oban, Mainland
Stornoway, Lewis
Tarbert, Harris
Tobermory, Mull
Troon, Mainland
Ullapool, Mainland
Not a huge list, but one that displays the variety of places served by the island men who plied the coastal trade of the West Coast of Scotland at this time.
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Wandering & Wondering 
mòran taing a Phàdraig, tha seo gu math inntinnteach. An do choisich thu mòran sna Hearadh?, 's e àite uabhasach math a th' ann airson coiseachd, tha na Hearadh cho faisg cuideachd