How do you change oil for centurion boat?

To change the oil in a Centurion boat, first ensure the engine is warm for better oil flow. Remove the oil drain plug and allow the old oil to fully drain into a suitable container. Replace the drain plug, then refill the engine with new oil through the dipstick tube, using the recommended oil type and quantity specified in the owner's manual. Finally, start the engine and let it run for a few minutes, checking for leaks and verifying the oil level with the dipstick.