b"Small Boat FurlingDeck Spherical jointComponents: UnderdeckUnderdeck FurlersSmall Boat underdeck furling units are ideal for sportboats and daysailers from 4.8 - 9 m (16 - 30'). The drum is located beneath the deck, lowering the tack height for maximized sail area. The single through-deck ball joint provides a low-profile, nearly watertight system that aligns the spool to the headstay. Like all Small Boat furlers, the underdeck furler is for furling only, not reefing. StationaryBelowdeckAn optional hoistable ball bearing halyard swivel can be installed onbracketthe headstay so the sail can be raised or lowered without removing479 Spool pivots to align with load.the headstay. See page 162.480Tack Adapter Tangs 481Stainless steel tack adapter tangs are used to adapt clevis pin489diameters on headstays to the standard clevis pin size that comes on the Harken unit. A third hole accepts lashing to adjust jib luff tension. TACK ADAPTER TANGSTurnbuckle eye on stationary bracket attaches to an underdeck chainplate.478477493UNDERDECK FURLERSComponents (if ordering separately)UpperHoistableWeightswivelswivelDrum Upper swivel Hoistable swivel Drum Fits Part No. Part No. Part No. oz g oz g oz g furler164 464 477L 2.6 74 2.9 82 24 680 477 Fairlead feeds line onto the spool.207 465 493L 9.2 261 8.9 252 42.6 1201 493478U 482 478L 15 431 16.8 477 81 2296 478FurlersPin-to-pin Drum LineJaw Max lu\x1bClevis pin Maximum Part lengthMin Max width wire Weight working loadNo. Description in mm in mm in mm in mm in mm in mm in mm oz g lb kg477Underdeck furler/small*6 1/8156791/8345/1681/831/46.423.3661950431 3 1/85/32 493Underdeck furler/medium*7 3/81881025/3243/1653/8103/165/167.950.514332000 45907 478Underdeck furler/large*10 7/3226051273/1651/461/21/4611.1962721 0001361 127/163 *Includes drum and upper swivel. Does not include hoistable swivel.Tack Adapter TangsTang-hole to tang- Upper pin Lowerpin Max lu\x1bClevis pin Maximum Part hole length wire Weight working loadNo. Description in mm in mm in mm in mm in mm oz g lb kg Fits furler 4794 mm tack adapter tang1 1/2385/1687/16115/3245/167.95.214730001361478 4805 mm tack adapter tang383/8107/16113/1653/89.55.2147300013614781 1/2 4816 mm tack adapter tang1 1/2387/16111/467/1611.15.2147 000 361478 117/163 1 4898 mm tack adapter tang1 3/8355/1685/1685/3245/167.9 .2912000 07493 3 9 161"