43) Assertion A : Depth and width required at the entrance to a harbour are more than those required in the channel.Reason R : The entrance to a harbour is usually more exposed to waves as compared to the harbour itself.Select your answer based on the coding system given below

44) When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as

45) The maximum harbour depth below lowest low water is generally equal to (i) loaded draft + 1.2 m when bottom is rock (ii) loaded draft + 1.8 m when bottom is soft (iii) loaded draft + 1.2 m when bottom is soft (iv) loaded draft + 1.8 m when bottom is rock Of these statements

46) The minimum diameter of turning besin, where ships turn by going ahead and without tug assistance should be [where L is the length of the largest ship to use the port]

47) Dead weight tonnage of a shipi) varies with latitude and seasonii) is more than displacement tonnageiii) is the difference between displacement load and displacement light Of these statements