This video explains the key technical terms involved in determining whether a ship can safely pass beneath an overhead obstruction, such as a bridge. It breaks down critical measurements like Air Draft, Air Gap, Overhead Clearance height, and tidal references, all of which are essential for ensuring safe vertical clearance during passage.
#AirDraft #BridgeClearance #ShipNavigation #MaritimeSafety #NauticalChart #UnderKeelClearance #ENC #TideAndDraft

Ever approach a bridge with a knot in your stomach, unsure of safe passage? This video equips seafarers with the essential knowledge to confidently calculate clearance under bridges. You will learn how to convert Charted Bridge Height to Actual Bridge Height, and how to calculate a correction to be applied to Air Draft. This tutorial is structured in three easy-to-follow steps, ensuring you have all the information needed to navigate bridge clearances safely and efficiently. Fair winds and clear bridges, shipmates! #BTM #Calculate #AirDraft