You want to enter a small bay. The survey dates from 1908, your boat draws 1.6 m and at the entrance the chart gives soundings of 5.5 m and 2.2 m. For ten days a 25-knot onshore wind has blown and the barometer is at 1026 mb (standard pressure 1013 mb). How much clearance do you have under the keel over the 2.2 m sounding, with the tide at chart datum, before and after the effect of pressure?
- Draught
- 1.6 m
- Soundings at the entrance
- 5.5 m and 2.2 m
- Pressure
- 1026 mb (standard 1013)
Solution worked out by us from the course material: to be checked by the instructor.