TEMPSC is an acronym for "Totally Enclosed Motor Propelled Survival Craft". It is a form of lifeboat typically installed on seagoing vessels, oil platforms or floating installations (Floating Production Storage and Offloading) related to the oil and gas industry for the evacuation of passengers or personnel on board. In most offshore installation emergencies TEMPSC are relied upon as the secondary means for mass evacuation, the primary method being bridge systems and helicopter.
References
TEMPSC Wikipedia(Text) CC BY-SA