A Practical Course in Wooden Boat and Ship Building: The Fundamental ... by Richard Montgomery Van Gaasbeek

Author:Richard Montgomery Van Gaasbeek
Language: eng
Format: epub
Publisher: F. J. Drake
Published: 1919-03-25T05:00:00+00:00

Figure 96.—Looking Forward—Heads of Timbers.

EAI8IN0 THE FBAHB8

retain shape. The inside surface of the forms should be dubbed with an adze, so as not to leave over 10 per cent of the sawed surface on the frames. The outside of the frames should be dubbed for each strake of planking, and the outer surface of planking rounded to confotmeto the shape of the

Flfure 97.—LMklm Aft—Heada of TlinberB.

ship. The thick ceiling is rounded on the back, 80 as to fit the frames.

Iron Strapping. —The entire frame work is ' braced and reinforced by a system of iron strapping. A top belt of %" by 8-inch iron extends from about 12 feet from the forward end to about 12 feet from the aft end of the ship, fastened to each frame by 1-inch by 10-inch countersunk bolts staggered. Diagonal straps of Vs-inch by 4-inch iron

COURSE IN WOODEN BOAT AND SHIP BDILDINO

leO COURSE IN WOODBN BOAT AND SHIP SUITING

are let into the outside of the frames and inclined at an angle of 45 degrees each way.

The diagonals are connected to the top belt by two %-inch rivets and at each crossing by one 1-inch rivet, and also fastened to each frame timber by one 1-inch countersunk bolt. They should be carried well down and wrapped arounA the bilge far enough to overlap the ends of the floor timbers.

The iron straps should be painted with two coats of red lead and oil before planking,

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CHAPTER Vm

PLANKINQ AND FINISHraG

Layout of the Ship. —Before going into the details of planting it will be well to refer to the

Figure 100.—Bow o( BMp Beadf tor PlaDklnB.

illustrations to get the general layout of the ship before planking and in the finished state.

Figure 100 shows the bow of a ship ready for planking. FignrelOlshows the same bow planked, with the staging still in position. Figarel02is a closer view of the details of the bow construction.

Figure 101.—Bow of Sblp Planked, Sbowlng Staging.

Preparations for Planking. —Figure 103 shows the starboard side of the ship ready to plank. Note the escaping steam, showing the location of the steam box used in bending the planking. Figure 104 shows the ship partially planked. In Figure

AND FINISHING lOS

105 it is completely planked just before launching, and in Figare 106 the finished ship is seen after launching.

Material. —The planking and ceiling throughout is made of yellow pine lumber. The ceiling is put

in in lengths 30 to 50 feet long, and the planking in lengths 24 to 40 feet, averaging 32 feet long. The bottom planking is 5 inches thick and 14 inches wide, bilge planking 6 inches by 10 inches, the planks narrowing as they reach up tKe side of the

AND FINISHING

COURSE IN WOODEN BOAT AND SHIP BUILDING

ship, beginning with 5-inch by 10-inch, then 5-inch by 9-inch, and 5-inch by 8-inch, the topside planking being 6-inch by 9-inch.

The lengths of the planking are jointed with square butts on the frames, with the seams out-gauged for calking.

The circle of the stern between the knuckle line and poop deck is planked vertical, as shown in Figure 107.

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