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In this section, 'Rig' is used to indicate a general type, planform and rigging inclusive (standard usage).
Within explanations, 'planform' is used where general and various junk rigging may be applied, and 'rig' is used where specialized rigging is required for correct function of the planform. This special usage is adopted, here, for clarity, and does not imply standard usage.
Aerojunk Rig:Rig developed by Paul McKay as a Junk Rig adaptation of the Aerorig. It features a triangular main and 7/9 foresail set on wishbone battens, and single halyard (no yard, however). Slot effect is created between foresail and main, which both set leeward, clear of mast turbulence.
Automatic Rig:Concept developed by HG Hasler and JK Mcleod. Any planform rigged for 'hands off' operation of all its functions, from a single position (typically an enclosed cockpit) may be considered fully automatic. Junk Rigs which develop positive, aft stagger and low or zero roach are suitable for automatic rigging with aft lead sheets.
Chinese Gaff Rig:Rig developed by Phil Bolger, which lands tuned battens at the mast (zero balance) using gaff jaws. Sheets are led higher and more spread out than is usual (landing on a mizzen or purpose built spar), and sometimes split into two or three separate sheeting systems, reducing downward pull on the leech. First used on Jim Melcher's Alert.
Colvin Rig:Rig used extensively (but not always) by designer Tom Colvin, based on a type used by seagoing junks from the South China Sea. It is a fanned sailplan with considerable roach, and generally employs double sheeting with euphroes, sheet hauling spans and sheetlets (sheetlets and bridles, respectively, in Colvin's terminology). They are typically stayed, and often flying triangular foresails.
Fantail Rig:Planform developed by David Tyler for Annie Hill's Fantail. It is a moderate aspect ratio, fanned sail with agressive fan in the upper sail. The luff is convex to counter-balance forward thrust from the canted battens.
Fenix Rig(s):Experimental planforms developed by Group Captain 'Bunny' Smith and initially rigged on Fenix. Its several variations are characterized by steeply fanned geometry. Voluntary turbulence was sometimes introduced. His planforms are reported to show gains in efficiency, but require more than usual line handling for best set. Voluntary turbulence is generally considered to have been detrimental to sail performance.
Hasler/McLeod (aka 'Standard') Rig:Planform developed by HG Hasler and JK McLeod, and detailed in PJR as their "recommended sail form". It is flat cut, consisting of a parallelogram with optimal stagger, topped by fanned upper panels. All battens, boom and yard are a constant length; battens may be switched to cover breakages. It is generally rigged with aft lead sheets, absent euphroe and sheet hauling span. It is generally considered to trade some efficiency for simplicity and excellent handling qualities. [PJR p.30, Fig. 2.25]
Hi-Power Rig:Planform developed by John Christian for Newbridge Boats. It is a high aspect, broad headed sail with a low angle yard. Windward efficiency is generally considered to be poor, and it has not been widely adopted.
Horizontally Hinged Hybrid Rig(aka Triple H Rig): Rig developed by Roger Taylor for MING MING II. It features a Hasler/McCleod planform, with cambered upper panels. It’s lower panels feature fabric ‘hinges’; alternating open pockets attaching a panel at intervals to the battens. Thus ‘hybrid’. Adjacent panels interlock in hinge fashion with the batten in place of the hinge pin. Lengths of individual hinges are varied to produce camber in a manner similar to the shelf method.
Jester Rig:Rig developed and used on Jester, by HG Hasler. It is high aspect-ratio, with a low angle yard, extended at its forward end. Aft lead sheets led to the cockpit employed the Hasler/McLeod concept of a fully 'automatic' rig. See Automatic Rig.
Johanna Rig:Rig developed and used on Johannaby Arne Kverneland. It is a modified Hasler/McLeod planform with two triangular and a transitional upper panels, with all panels adjusted for equal area and cambered. The total result is greatly improved windward efficiency.
Mallory Rig:Planform developed by Dave Mallory (popularized by Derek Van Loan). It is a parallelogram sail, with two transitional panels, and characterized by very low yard angle.
Reddish Rig:Planform developed by Vincent Reddish, abstracted from his survey of Chinese planforms. It is a low aspect ratio, fanned sail. Mr. Reddish prescribes traditional Chinese construction methods of which includes some camber and roped edges for best results. Generally rigged with tack hauling parrel, to 'square away' before the wind.
Soft Wingsail Rig:Rig developed by David Tyler. It is distinguished by a near triangular, high roach sail, in which the reversed yard (foreward end uppermost) places the throat higher than its vestigial peak. A doubled area of sailcloth, set forward on partial wishbone yard and battens, envelops the mast, halyard and parrels. Reduced turbulence from these rigging components improves the sail's aerofoil and efficiency.
Split Junk Rig:Rig developed by Slieve McGalliard. It is characterized by low yard angle and a large balance of around one third total area. With the exception of the upper sail, panels are split along the mast, allowing the sail to set equally well on either tack. All panels and jiblets are cambered, resulting in high lift/drag ratio and excellent windward efficiency.
Sunbird Rig(s):Planforms developed by Alan Boswell for Sunbird Marine. More recent variations (Sunbird 90s Rigs) combine features of fanned Fenix and Reddish rigs. It is relatively high aspect ratio, fanned sail with the high angle yard extended to remain forward of the mast, when reefed. The aft end of the uppermost batten is extended to reduce the sheeting problems associated with roach. Generally rigged with tack hauling parrel, to 'square away' before the wind.
Triple H Rig: See Horizontally Hinged Hybrid Rig.
Van Loan Rig:Erroneous attribution of Mallory Rig to Derek Van Loan, who popularized it in his book, The Chinese Sailing Rig. See Mallory Rig.
Source: JR Glossary Project, 2016