Fok in the Dutch language means Foresail Or breeding, when you are talking about a verb.
As with most the jib or the foresail
A balloon sail is a large, light foresail sometimes used instead of a jib.
I just bought a nice, new foresail for four hundred dollars. Four ways for freedom!
Sailboat having one mast, with a four-sided mainsail set from its after side and a foresail hanked to the forestay.
This could be a sloop (main + jib), a cutter (main + jib + foresail), or a cat boat (main alone). There are many variations.
The Victoria was a Carrack so would have had six sails, namely bowsprit, foresail, mizzen, spritsail, and two topsails.
It is a track that the jib slides up. It is designed to reduce windage and usually has two tracks allowing you to hoist a smaller foresail while still keeping the other in the air. You can then lower the other (or "peel") the jib.
it is the small sail on the boat. Wrong. On a boat a sheet is a rope, not a sail. The jib (or foresail) is switched from starboard to port (and vice versa) depending on the wind direction and during tacking. The rope which does this is a jibsheet (Or foresheet).
A Jib is a secondary sail which is generaly smaller than the mainsail, and is usually possitioned at the frount of a boat (a foresail). It is generally triangular and is used to counteract the turning force of the mainsail around the pivot point of the vessel in some classes of boat.
A spinnaker is a large sail that is usually brightly coloured. It is made in very light material, and is used when running (that is, sailing with the wind abaft) in light airs. When hoisted the usual foresail, a jib or genoa, is dropped.There is no special name for a sail bag, apart from "sailbag".
One example of a prefix that begins with "f" is "fore-". This prefix is often used to indicate something that comes before or in front of something else.