Which type of vessels are dedicated for high-speed military deployments?

The correct choice is sealift ships, which are specifically designed and equipped for the rapid transportation of military cargo, troops, and supplies during high-speed deployments. These vessels are built to meet stringent military requirements and can operate effectively in various maritime environments. They often feature capabilities such as fast loading and unloading, substantial cargo capacity, and improved maneuverability, which are crucial for quick and efficient military operations.

Heavy lift ships, while used for transporting large items, do not specifically target the needs of military flexibility and rapid deployment. Research vessels are intended for scientific exploration and data collection, lacking the requirements for military operations. Crew boats are designed primarily for transporting personnel to offshore facilities and are not equipped for the comprehensive logistical support needed for military deployments.