Transit Draft
The maximum permissible draft for Canal transits has been set at 39 feet 06 inches
(12.04 meters) Tropical Fresh Water (TFW) at a Gatun Lake level of 81 feet 06 inches
(24.84 meters) or higher.
Gatun Lake density is 0.9954 gms/cc at 85ºF (29.4ºC).
Transition to fresh water frequently alters the trim of large vessels 3 to 4 inches
(7.5 to 10 centimeters) by the head.
For vessels to be considered eligible to transit at the maximum permissible
draft, the following bilge keel information must be submitted:
- "A" - Half breadth of vessel to outside of shell
- "R" - Radius of turn of bilge (feet & inches)
- "DR" - Dead rise at side of vessel (inches)
Operators are encouraged to ascertain from owners a vessel's draft status
when arranging a fixture.