Port Glasgow born Harry ‘Chippy’ McNish was the carpenter on Sir Ernest Shackleton's ill-fated Imperial Trans-Antarctic Expedition of 1914–1917. He modified the lifeboat ‘James Caird’ enabling Shackleton and five crew, including McNish, to sail 800 miles over open seas for help. The modifications played an essential part in the rescue of the entire crew but sometimes forgotten in the retelling of this great adventure.