Abstract: A clamp-on fishing rod holder base that can be used with any rod holder with a {fraction (3/8 )} inch threaded rod. It will hold two (2) spinning, or casting rods and reels securely to any boat with tie-down cleats. The position of the tie-down cleats on most fishing boats are located either on the top, 90 degrees of horizontal surface, on a 45 degree angle, inside or outside, and on rare occasions the tie-down cleat is mounted on a vertical surface. The device comprises; T-bracket with two (2) {fraction (3/8 )}inch threaded holes. One in each end of the top bar, a channel bracket, which will be called a C-bracket from here on, and a {fraction (3/8 )} inch bolt assembly that is used to pull the C-bracket and the T-bracket together with the tie-down cleat between the two (2) brackets. When the bolt assembly is tightened, it acts as a clamp and holds the rod holder base on the boat. The C-bracket has a tab on the bottom, that protrudes under a tie-down, which provides a safety catch.