四、申論題（請用英文作答）： （30 分）  A tender ship is one with a very small GM caused by KG being too large. This occurs iftoo much weight is placed high up within the ship. The ship will have insufficient stability,righting moments will be very small when heeled causing the ship to be sluggish and slowto return to the upright. Roll period will be long. A very small GM should be avoided forsome reasons. Please write down the reasons.