Here work on steel and manila rope and cables is carried on. Cables are spliced and all sorts of servings and fancy rope work are got out, such as man ropes, tiller ropes, and hammock clews. The rigging loft is usually protected from the weather. Much of the work, such as knotting and splicing, can be done sitting down. Practically all the work is done with hand tools.
PLAN No. 1042. MOLD LOFT
Here the plans of a ship under construction are laid out from the blue prints and patterns and wooden patterns, or “templates” for bending, cutting, and punching the steel parts of the ship are prepared. It usually is an inclosed building with a special floor large enough to lay out any part of a ship full size. The work in the mold loft requires almost constant standing, and kneeling or sitting on the floor. Loftsmen of different grades are employed. Loftsmen must be able to read all sorts of drawings and blue prints as they come from the drafting room and lay out the different parts on the mold-loft floor with great accuracy.
OUTSIDE TRADES, OFFICE WORK, AND MISCELLANEOUS OCCUPATIONS
In addition to the regular shop trades there are a number of trades carried on in the yards and on ships in the open air and other employments in navy yard supply departments and offices. These employments have to do mainly with the construction of ships, repair work on hulls, maintenance of the plant, distribution of supplies, and other miscellaneous services.
Following is a brief description of the more important of these occupations.
PLAN No. 1043. SHAPING, BENDING, AND CUTTING STEEL FRAMES AND PLATES
This includes the work of shaping and bending steel beams (frames), cutting plates to proper sizes, bending them, and punching them for the rivet holes. The work is generally carried on in shops that are roofed over, but sometimes open on all sides. It is hard and requires standing practically all the time. Heavy machines, furnaces, and hammers are used. Among the men employed are angle-smiths, furnace men, frame benders, punchers, shearers, drillers, countersinkers, and sometimes acetylene operators.
PLAN No. 1044. RIVETING, CHIPPING AND CALKING, DRILLING, AND REAMING
On construction and repair work these occupations are all carried on in the open air. Riveting is usually carried on by gangs, consisting of a riveter, a holder-on, a heater, and sometimes a fourth man called a passer. The steel plates of a ship overlap and are held together by rivets which are passed through holes in both plates and headed up while hot. Riveting is usually done with pneumatic riveters or “guns” operated by compressed air. The riveter operates the gun on one side while the rivet is held in the hole by the holder-on, who has various tools that he uses for this purpose. The heater tends a small portable furnace in which the rivets are heated, picks them out as needed and sticks them in the holes or gives them to the passer. Sometimes he tosses the hot rivet directly to the holder-on. This work must be carried on out of doors in all weathers. The work of the riveter is hard, as he must handle the gun with from 100 to 150 pounds of air pressure in it and must work in all sorts of positions. The holder-on works under about the same conditions. Both jobs require men of strong physique. The heater has a somewhat easier job and boys are often employed for this work. Before the plates and other parts can be riveted or drilled and reamed they must be held fast in place. This is done by the use of bolts and nuts set up hard with a wrench. This work is also hard, and the working conditions are the same as in riveting and drilling and reaming.