1) Bowsprit extension 2) Nautical spar 3) Sailing spar 4) Spar 
A spar used to extend the bowsprit.
A spar used to extend the bowsprit.
A jibboom (also spelt jib-boom) is a spar used to extend the length of a bowsprit on sailing ships.{sfn|Smyth|2008|p=412} It can itself be extended further by a flying jib-boom.{sfn|Smyth|2008|p=412} The heel (i.e. rear and lower) end of the flying jib-boom is attached to the jib-boom, and the heel of the jib-boom to the bowsprit. The point (i.e. ...
spar forming an extension of the bowsprit
spar forming an extension of the bowsprit
Spar secured to and extending forward of the bowsprit. The flying jibboom was another extension.
[n] - a spar that extends the bowsprit
noun a spar that extends the bowsprit