Beam track is available from size 0 to 3 and is used when spanning cockpits and across companion way hatches.
Drilled track is commonly used
and particularly useful where through deck fixing is not possible, such as
in double skinned boats, where fixing bolts are trapped into a plate in
the deck. Available from size 0 to 3.
Sliding bolt track is
available in sizes 1 & 2 and has a smooth
clean profile with no visible fixings and the ability to retro-fit new
track to the deck using original bolt holes there is no need to worry
about old track pattern holes matching up with a new track. The
track is designed to permit a washer to fit on each bolt between the track
and deck to ensure a secure seal.