Sparcraft S Masts

Sparcraft S Mast Sections are designed as approximate replacements for some discontinued Sections. Please note that Sparcraft has recently relabeled some of its' existing Sections with the S- prefix. For example, what for many years was called an FM-305 they now refer to as an S-305, what was called an IM-180 they now refer to as an S-180, though in all these cases nothing physical has changed. For simplicity, convenience, and as historical convention, we only refer to new Sections with the S- prefix as S-Sections. Even the S-622 & S-830 were originally (for a short time), referred to as I-622 & I-830, but, as these are New shapes falling into no previous categories, we use the S- prefix. All other renamed Sections will be found under their Original designation, See FM Mast Sections, and IM Mast Sections. Though Sparcraft uses a number of common components in their Spar Assemblies, many Mast Parts are specific to a particular Mast Section. For these parts you must determine which Mast Section you have by measuring its' maximum Outside Dimensions. Click on individual Mast Sections, below, to see hardware commonly used with those Sections. For common replacement Mast Parts, See Sparcraft Mast Components, below. For complete Mast Assemblies, contact us with details. See also Sparcraft Booms, and Sparcraft Spreaders. See also, other Sparcraft Mast Sections.

Sparcraft S-622 Mast Measurements (OD): 9.21" x 5.12" (234mm x 130mm) Wall Thickness (minimum): 4.3mm Weight/M: 7.36kg. - Weight/ft.: 4.93 lbs. Moments of inertia: Ixx = 44.09", Iyy = 14.30" Moments of inertia: Ixx = 1835cm4, Iyy = 595cm4 Circumference: 24 1/4" Sail slides: 15/16" flat slides, MM#8 Alloy: 6005-T6 Standard Mast Lengths: 15.3M, 19.7M Common Mast usage: Beneteau First 40, First 44.7R; Catalina 440; Grand Soleil 43, Hanse 400; J/122; Jeanneau Sun-Odyssey 401, 409; Lagoon; Replaces: FM-740, NG-60(+)
Sparcraft S-830 Mast Measurements (OD): 10.04" x 5.51" (255mm x 140mm) Wall Thickness (minimum): 4.5mm Weight/M: 9.03kg. - Weight/ft.: 6.05 lbs. Moments of inertia: Ixx = 63.38", Iyy = 20.28" Moments of inertia: Ixx = 2638cm4, Iyy = 844cm4 Circumference: 26 1/4" Sail slides: 15/16" flat slides, MM#8 Alloy: 6005-T6 Standard Mast Lengths: 19.52M 22.2M* Common Mast usage: Beneteau 44.7, First 45; Grand Soleil 43, 45; Hanse 430; Island Packet 379; Jeanneau Sun-Odyssey 431, 439; Replaces: NG-80(+)
Sparcraft S-2100 Mast Measurements (OD): 12.91" x 7.07" (328mm x 180mm) Wall Thickness (minimum): 5.4mm 3133 Weight/M: 12.9kg. - Weight/ft.: 8.64 lbs. Moments of inertia: Ixx = 150.22", Iyy = 50.02" Moments of inertia: Ixx = 6252cm4, Iyy = 2082cm4 Sail slides: 15/16" flat slides, MM#8 Circumference: 33 5/8" (854mm) Alloy: 6005-T6 Standard Mast Lengths: 13M, 21M Common Mast usage: Beneteau ; Contoy 65, 70; Gold Coast 65; Lagoon 450; Waterline 54;

S Mast Components

Sparcraft uses a number of common components in their Spar Assemblies. Parts that are common to a variety of S Masts are listed below. Many Mast Parts, however, are specific to individual, or a small number of Mast Sections, and are listed under those particular Mast Sections. For Parts not listed below, determine which Mast Section you have (by measuring). Click on individual Mast Sections (above) to see hardware commonly used with those Masts.

Sheaves & Rollers
External Masthead Spinnaker Cranes
External Spinnaker Halyard Blocks
Masthead Stemball / Eye Adapters
Halyard Fairleads / Eyes / Spectacles
Forestay/Staysail Stay Tangs
Fractional Jib Boxes
Exit Blocks
Spreaders

Spinnaker Cars for T-Track
Spinnaker Cars for Ball-Bearing Tracks
Halyard Exit Plates
Spar Cleats
Welded Mast Base Exit Boxes
Vang Brackets & Vang Toggles
Isomat/Sparcraft Solid Vangs
Mast Base Turning Blocks & Attachments
Mast Wedges
Deck Tie-down Turnbuckles

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Spars, Rigging, and Hardware for Sailboats