Mark Fives

http://www.socom.mil/Archives/2003/Oct/SBT-12/PR%2003-14%20(SBT-12%20in%20OIF).htm

From the novel:

SEALs on an island who want to withdraw:

"We can have the captain launch the Mark Fives and meet them on the beach. ... We can bring the boats right in on the beach, load up and head out to the aircraft carrier."

The problem is that Mark Fives are not some small rubber boats that you can carry onto the beach. How do you imagine this situation? There is a slight possibility that the boats in the second sentence are smaller rubber ones. Mark Fives must have their drivers and are not just left to float.