Owner and passenger were fishing north of the south jetty in Charleston Harbor. Wind increased causing choppy waters in the area and owner attempted to pull up the anchor attached to the bow.  The anchor was stuck.  Owner then instructed passenger to tie the anchor to a stern cleat.  Once tied on the owner attempted to go forward to pull the anchor loose.  As he did, a wave came over the boat and another wave, swamping and then capsizing boat.  Both men grabbed life jackets.  They were in the water for about 10 minutes when another vessel saw them and picked them up from the water.  Assisting vessel reported it to Coast Guard and transported the men to the boat landing.
Atlantic Ocean