As an adjective navigational
is pertaining to navigation.
As a noun cathead is
(nautical) a heavy piece of timber projecting from each side of the bow of a ship for holding anchors which were fitted with a stock in position for letting go or for securing after weighing.
cathead
English
Noun
(
en noun)
(nautical) A heavy piece of timber projecting from each side of the bow of a ship for holding anchors which were fitted with a stock in position for letting go or for securing after weighing.
Similar rigging on the outside of a building.
Related terms
* cathead biscuit