A married couple drowned after their fibreglass boat capsized in rough waters off Kuala Merchang on Sunday (Aug 31).br br Abdul Rahim Mustaffa, 47, and his wife, Norhasriah Che Osman, 46, from Pulau Kerengga, had gone out to sea in a 20ft fibreglass boat to fish when it was believed to have overturned after being struck by strong waves and heavy winds.