RedactedNarrative: V1 was fishing on the east side of Lake Manawa when they noticed a storm approaching. V1 decided it was time to head to the boat ramp on the west side of the lake in Pelican Cove. Operator/Victim stated the 5 hp didn't move the boat very fast & the storm got to them before they could get to the ramp. V1 was about 200 ft off shore heading west when the wind picked up & created about 3 ft waves. 2 of the waves came over the transom of the boat & the boat went straight down.  Victim stated that it happened so fast that they didn't have time to put on life jackets.  Park Ranger has been watching the event & called 911 when the boat sunk and then swam out to rescue passenger#1.  Once Park Ranger & passenger#1 were on shore, fire & rescue showed up to rescue the operator/victim.  The life jackets were tied together with the bow rope & the Type IV was still stuck under the seat.