Aluminium sailboat mast
Z105 Z-Spars

Masthead rig

Extruded alloy masthead attached by right-angled bolts with nuts and lock washers. The head incorporates toggles for forestay, backstay (twin backstays where necessary). Large diameter delrin halyard sheaves for two foresails, main halyard and boom topping lift. Instrument tray. Attachment for spinnaker halyard block.
Fractional rig

Masthead extrusion attached by right-angled bolts with nuts and lock washers. The head incorporates backstay anchorage(s) and sheaves for main halyard and topping lift. Instrument tray.

For Z401:

Triple combi sheave box incorporating forestay anchorage, foresail halyard sheave and spinnaker halyard sheave.

For Z501 and larger masts:

Separate forestay tang and sheave box for foresail halyard.
Specification common to masthead and fractional rigs

Backing shells for capshroud attachment.

Through-mast alloy bar spreader root with spreader support plates is the system most commonly used. With this system, separate provision is made for lower shroud anchorage. Usually this will be holes cut for backing shells. Where holes for backing shells have been cut, the shells will be supplied.

Cast alloy spreader brackets incorporating swivel spreader base and double lower shroud anchorage for ball swages for sections Z531 upwards is also available and used commonly on cruising rigs.

Aerofoil spreaders with sail-saving delrin ends incorporating clamps for the shrouds. Some spreaders are tapered, some parallel.