所屬科目:港務局◆海事英文概要
1. Compass rose, normal pattern. 3o 45’W 2010(0.6’W) on magnetic north arrow means Magnetic Variation 3o 45’W in 2010, annual change 0.6’W, i.e. magnetic variation increasing 0.6’ annually
3. Isolated Danger Marks, stationed over danger s with navigable water around them. Top-mark: 2 black spheres.