Rig-Rite Round Masts Page

In its over 50-year production history, Rig-Rite has built spars for and provided OEM spar and rigging packages to many manufacturers of Traditional vessels and Catboats using Round Mast Sections.
Complete Mast Section specifications are listed below. Click on individual Mast Sections, to see hardware specific to those Sections. For more generic parts, see General Spar Parts.

Most common Mast replacement parts are listed under the Mast Section that they attach to.
To find the part you need, first, determine which Mast Section the part attaches to by measuring the Section. Then, click on that Section. Descriptions, specifications, and, in many cases photos are displayed there.

If a part you need is not listed on-site, please forward a sketch or photo of the part with measurements and full details including which Mast Section the part attaches to. If you unable to determine which Mast Section you have from the details given on-site, we will require a tracing of the Mast Section with measurements.

Booms for most Traditional vessels and Catboats have used standard Rig-Rite Boom Sections, See Rig-Rite Boom Sections.


Rig-Rite Round Mast Sections & Parts
Rig-Rite 4" OD Round Mast Section Measurements: (OD) 4" (101.6mm) Wall Thickness: .125" Weight/ft.: 1.80 lbs. Moments of inertia: Ixx = 2.859" Circumference: 12.56" (319.18mm) Alloy: 6063-T6 Standard Mast Lengths (tapered): 19' 2", 20' 5", 24' Common Mast Usage: Nowak & Williams, and Squadron Yachts: Minuteman 15, Scout Ketch (mizzen); Marshall 15;
Rig-Rite 5" OD Round Mast Section Measurements: (OD) 5" (127mm) Wall Thickness: .125" Weight/ft.: 2.30 lbs. Moments of inertia: Ixx = 5.688" Circumference: 15.71" (399mm) Alloy: 6063-T6 Standard Mast Lengths (w/ 7' taper to 3"): 12', 23' 4", 30', 32' 6" Standard Tube Lengths (untapered): 9' 2", 20' 6" Common Mast Usage: Nowak & Williams, and Squadron Yachts: Herreshoff America Cat, Eagle, Pilot, Scout Ketch (main); Marshall 18; Menger Cat 19;
Rig-Rite 6" OD Round Mast Section Measurements: (OD) 6" (152.4mm) Wall Thickness: .188" Weight/ft.: 4.00 lbs. Moments of inertia: Ixx = 14.47" Circumference: 18.85" (478.78mm) Alloy: 6063-T6 Standard Mast Lengths (tapered): 31' Common Mast Usage: 22 Sloop;
Rig-Rite 7" OD Round Mast Section Measurements: (OD) 7" (177.8mm) Wall Thickness: .188" Weight/ft.: 4.70 lbs. Moments of inertia: Ixx = 23.30" Circumference: 22" (558.57mm) Alloy: 6063-T6 Standard Mast Lengths (w/ 7' taper to 3 1/2"): 29', 34' Common Mast Usage: Marshall 22; Menger Cat 23;
Rig-Rite 8" OD Round Mast Section Measurements: (OD) 8" (203.2mm) Wall Thickness: .220" Weight/ft.: 5.40 lbs. Moments of inertia: Ixx = 35.13" Circumference: 25.13" (638.37mm) Alloy: 6063-T6 Standard Mast Lengths (w/ 10' taper to 4 1/2"): 33' 6" Common Mast Usage: 26' Cat;

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Spars, Rigging, and Hardware for Sailboats