Large two-stroke turbocharged uniflow scavenged internal combustion engine and method of operating the same

A large two-stroke turbocharged uniflow scavenged internal combustion engine and method of operating the same, the internal combustion engine configured to operate at jacket high water temperatures. An orifice in each of the fluid connections between the pressure vessel (74) or expansion tank (77) and the water-based cooling circuit (70) is provided for: in case of an unexpected boiling of water in the cooling jacket, cylinder head or exhaust valve due to stagnation in the water-based cooling circuit (70), the flow of water from the water-based cooling circuit (70) to the pressure vessel (74) or expansion tank (77) is throttled.