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Without elasticity, the varnish would soon crack, allowing water to penetrate the wood beneath. Prior to the development of modern polymer chemistry, varnish production was rudimentary. Originally, spar varnish was a "long oil" varnish, composed primarily of drying oil with a small proportion of resin, usually boiled linseed oil and rosin. [1]
USCGC Spar (WLB-403) was a 180-foot (55 m) sea going buoy tender. An Iris class vessel, she was built by Marine Ironworks and Shipbuilding Corporation in Duluth, Minnesota. Spar's preliminary design was completed by the United States Lighthouse Service and the final design was produced by Marine Iron and Shipbuilding. On 13 September 1943 the ...
The first, and thus far unique, cell-spar platform was Kerr-McGee's Red Hawk spar (7 ea. 8 m (26 ft) diameter cells). [6] Field-depletion occurred 4 years after production started, so Red Hawk was decommissioned in 2014 under the Bureau of Safety and Environmental Enforcement 's " Rigs-to-Reefs " program, at which time it was the deepest ...
Spar varnishes are thus not necessarily the best choice for outdoor woodwork that does not need to bend in service. Despite this, the widespread perception of "marine products" as "tough" led to domestic outdoor varnishes being branded as "Spar varnish" and sold on the virtue of their weather- and UV-resistance. These claims may be more or less ...
A spar is a pole of wood, metal or lightweight materials such as carbon fibre used in the rigging of a sailing vessel to carry or support its sail. These include yards , booms , and masts , which serve both to deploy sail and resist compressive and bending forces, as well as the bowsprit and spinnaker pole .
After a successful run with the product, Z-Spar was sold to a company called Koppers. Shortly after Z-Spar joined Koppers, they would purchase the Woolsey line, merging the two companies under one name. Pettit Marine Paint was established in 1972, after the unification of three lines of marine paint manufactures – Pettit, Woolsey, and Z-Spar. [4]