Heerema Marine Contractors has reduced the North Atlantic transit time of its semi-submersible crane vessel (SSCV) Sleipnir by 2.5 days following a voyage optimization pilot with French ocean intelligence company Amphitrite.The data-driven pilot reduced the vessel's sailing distance by 240 nautical miles and lowered carbon dioxide (CO2) emissions by up to 18%, while maintaining higher average sailing speeds without increasing fuel consumption…