George F. Campbell
The neophyte shipmodeller`s jackstay
MADE MASTS were a solution to the shortage of large trees suitable for lower masts. The four or more pieces were fitted (coaked) and held to the core (spindle piece) by bolts and hoops of iron, at regular intervals up the mast. Note, too, that made masts were stronger than the single piece mast, size for size. Fig. 53C. On large ships (and on snows) just abaft the mizzen mast was stepped a SPENCER MAST which relieved the mizzen mast of the sail hoops and other gear which the spanker sail entailed. A band or cap just under the mizzen top held the spencer mast. Fig. 54.
The BOOM and GAFF of the spanker (or driver) sail both had jaws which rode on and held these spars to the mast, assisted by a PARRAL of rope with wooden rollers. A loop of thread will will serve here with a few beads for realism Fig. 55.
The boom is supported at the mast by a BOOM JAW REST or SADDLE of either full circumference, Fig. 55D, while its outer end was carried by a TOPPING LIFT which was adjustable by tackle. The set of the sail to the wind was adjusted by means of the MAIN SHEET. The GAFF carried the head of the sail and was adjusted by means of the peak and throat halliards (haul yards) Fig. 54.
Making the jaws: From thin wood stock first from A and В pieces. Fig. 55. Cement these two rough formed jaws in place on the spar. Now finish (file or knife) the inside of the jaws to fit the mast Fig. 55C, then the rest of the jaw. For detail and added strength you may put pins thru, first drilling with a No. 75 drill, inserting the pins, then snipping them short.
Yards were tapered toward their ends. The earlier types in the 17th and early 18th centuries had a middle portion, eight sided and nearly parallel, and then almost a straight taper towards the ends. Later the eight'sided portion was often retained, but the taper extended over the whole length. Fig. 56A&56 B.