Z S P A R S U K L o g o

DELTA SERIES MASTS (and equivalent furling masts)

Delta masts are available for yachts in the range 15 to 35ft (4.6 to 10.7m) LOA., in masthead or fractional rig configurations, deck or keel stepped. Tapered top sections are available for fractional rig (non furling) masts. 

For yachts in the range 25 to 50ft (7.6 to 15.5m) LOA., please see 01 Series masts (and equivalent furling masts).

Quarter Ton Cup clean sweep: Ed Dubois’ "Enigma" took first place in the Red Funnel Quarter Ton Cup series hosted by the Royal Corinthian Yacht Club, Cowes, in June 2006. Peter Morton’s "Espada" finished second overall. Z Spars UK supplied both yachts with Z230 masts. Between them they won all the races in the series. "Espada" went on to win the series in 2007.
Photo courtesy of Fiona Brown/RCYC

DELTA MASTS: STANDARD SPECIFICATION

Masthead rig

Masthead casting attached by 2 x 8mm right angled bolts with nuts and lock washers. The head for sections Z170 through Z230 incorporates anchorages for forestay and 2 backstays which require ball swage terminals. Delrin sheaves for genoa & main halyard. Separate block or fairlead fitted on side of masthead for boom topping lift. Masthead unit not available for section Z145.

The Z265 and Z351 masthead incorporates a toggle for the forestay, integral cap shroud anchorage, single backstay for ball swage terminal, twin foresail halyard sheaves, main halyard and topping lift sheaves in delrin. Instrument tray. 

Fractional rig 

Masthead casting rivetted into section. The head incorporates a backstay anchorage and sheave for main halyard. Separate block or fairlead fitted to side of section for boom topping lift.

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

Specification common to both rigs.  

Backing shells to take ball terminals for cap shroud and lower shroud anchorages.

Cast alloy spreader brackets on section Z145 to Z230. Alloy through-mast bar spreader root with side support plates on Z265 & Z351 sections.

Aerofoil spreaders with sail-saving delrin ends incorporating clamps for the shrouds.

Pole lift sheave box. Fixed spinnaker pole ring. (track and plunger car with ring can be fitted at extra cost).

Halyard exit chafe plates in stainless steel. Colour coded messenger lines for all halyards.

Sail slide entry with stopper, or luff rope sail entry.

Gooseneck assembly with toggle, double reef hook and tack shackle.

All sections except Z351 have a mast foot rivetted into the section, and a mast base with a pivot pin for mast raising. The section Z351 mast base does not have a pivot pin facility. All mast bases have a kicking strap anchorage and facilities for the attachment of up to 8 base blocks.

Conduit with messengers to masthead for all masts except Z145.

Keel stepped mast 

Plain mast base is available with some sections instead of the mast foot/base plate combination. Separate kicker anchorage supplied. Our keel-stepped bases are not adjustable. A water trap is available at EXTRA COST.

IRC GP26 Class "Gouvia Marina", built by Corfu Yacht Yard.
Z Spars UK supplied a Z265 mast and Z204 boom for this fast and elegant small yacht.

To verify the size of mast appropriate to your boat, go to: SPAR DIMENSIONS AND TECHNICAL INFORMATION

MAST COMPONENT DRAWINGS (1999 on): Delta masts - component drawings (pdf file).

MAST COMPONENT DRAWINGS (up to 1998): Click on the required section (below) to view detailed isometric drawings and other data.

NOTE: New masts in sections Z301 and Z350 are no longer available, but most fittings for Z351 are compatible. Z380 section was discontinued in 2006.

Yacht LOA Mast Section
Feet Meters
15-19 4.6-5.8 Z145 up to 1998 
18-205.5-6.1 Z170 up to 1998 
20-226.1-6.7 Z190 up to 1998 
23-267.0-7.9 Z230 up to 1998 
24-267.3-7.9 Z265 up to 1998 
26-297.9-8.9 Z350 up to 1998 
3/4 TON3/4 TON Z380 up to 1998

We reserve the right to change the specification without notice.

All goods sold by Z Spars UK are sold subject to our TERMS and CONDITIONS
Last updated 2 December 2009