The DEEP DRILLER is loaded as shown in Sample Load Form #4 (Drilling). What would be the new sum of transverse moments for Fuel Oil if the entire contents of Tank 4P are transferred to Tank 4S?
• Transverse moment for a tank = weight in the tank × its transverse distance (TP) from centerline • When transferring from 4P to 4S, the total fuel oil weight stays the same, but the location of that weight changes • You need the original transverse moments for all fuel tanks and then adjust only the two tanks involved (4P and 4S)
• From Sample Load Form #4, identify the original weight and transverse moment for Tank 4P and Tank 4S • Think about what happens to the moment of 4P when it is emptied and to the moment of 4S when it receives that same weight • After adjusting the moments for 4P and 4S, recalculate the total fuel oil transverse moment sum and compare with the answer choices
• Be sure you read the TP (transverse position) correctly for each tank from the load form, including the sign (port vs starboard) • Confirm that you set Tank 4P’s weight and moment to zero after transfer, and add the transferred weight to Tank 4S using its TP • After recomputing, verify that your new total fuel oil moment is close to one of the options and that you did not change any other tanks by mistake
No comments yet
Be the first to share your thoughts!