CalMac - 2 Transactions of Maritime Science Trans. marit. sci. 2013; 02: 91 - 100 Problem of Boil-off in LNG Supply Chain by Đorđe Dobrota, Branko Lalić, Ivan Ko- mar 3 Wärtsilä website - www.wartsila.com, then Search ‘Boil-off Gas’. 4. VRS - New Vessels 1 & 2 - Business Case 6 August 2014. 5.