 Coda Octopus Group, Inc. CODA CODA, a global leader in real-time 3D sonar technology and real-time subsea intelligence, announced the election of J. Charles Plumb, Captain, USNR Ret. to its Board of Directors. Captain Plumb was elected at the Companys annual meeting of stockholders. Captain J. Charles Plumb is a retired U.S. Navy fighter pilot and former Vietnam Prisoner of War. 