For human powered systems the efficiency must be as high as possible and the design of the propeller airfoil is crucial to achieving sustained flight or long distance boat travel.

Earlier this week, the Coast Guard intercepted a suspected human smuggling boat with 21 migrants on board about 20 miles off the coast of Point Loma. They were all transferred to Border Patrol ...

All people using a human-powered watercraft or in boat races must wear a life jacket approved by the Coast Guard. Non-residents will not see any changes to existing day-use fees, unlike in-state ...