Naval stores

Naval stores are a group of products derived from the pine tree (Pinus species). These products have been used for centuries in shipbuilding and maintenance, hence the term "naval". The primary products include turpentine, rosin, pitch, and tar.

History

The use of naval stores dates back to ancient times. The Ancient Egyptians used pitch for the construction of their ships. In the Middle Ages, naval stores were essential for the construction and maintenance of wooden ships. The industry flourished in the American South during the 18th and 19th centuries, with the longleaf pine (Pinus palustris) being the primary source of raw material.

Production

Naval stores are produced from the resin of pine trees. The process begins with tree tapping, where cuts are made into the tree's bark to allow the resin to flow out. The resin is then collected and processed to produce the various naval store products.

Turpentine

Turpentine is a volatile oil distilled from the resin. It is used as a solvent and in the production of varnishes and paints.

Rosin

Rosin is the solid residue left after the distillation of turpentine. It is used in a variety of applications, including the manufacture of paper, soap, and varnishes.

Pitch

Pitch is a dark, viscous material produced by heating rosin or tar. It was traditionally used to waterproof the wooden hulls of ships.

Tar

Tar is a thick, dark liquid obtained by the destructive distillation of pine wood. It was used for preserving wood and rope and for caulking ships.

Modern Uses

While the use of naval stores in shipbuilding has declined with the advent of steel ships, these products continue to find use in a variety of industries. Turpentine and rosin are used in the paint and varnish industry, while pitch and tar have applications in road construction and roofing.

See Also

• Forestry
• Shipbuilding
• Pine