Four crew members have been rescued from a tugboat taking on water in the Intracoastal Waterway near Freeport, Texas, the U.S. Coast Guard said.Coast Guard Sector Houston-Galveston command center watchstanders received a phone call at 6:02 a.m. on Sunday from the captain of the 52-foot tugboat Captain Mark stating the vessel was taking on water near the Brazos River Flood Gates while pushing two equipment barges. All four crewmen aboard the tugboat were wearing life jackets.The Coast Guard issued an urgent marine information broadcast and launched a 29-foot Response Boat–Small crew from Station Freeport to assist.The RB–S crew arrived on scene and transferred personnel to the tugboat with a dewatering pump.