How old are the cannon?
The cannon are believed to have been built in the
late 18th century, based on markings on the
cannon as well as metallurgy testing done by Dr. Madden
of the University of Pennsylvania. Two of the
cannon, Cannon B and Cannon E, are marked
with a letter "H." This was the symbol used by the
founder Harrison, of Robertsbridge, Sussex, England.
If Harrison was the manufacturer, the cannons
were made before 1746. Based on other
markings made on the cannons' trunnions, it is
believed that they were built in England or Scotland.
Where did the cannons come from?
It is not known exactly how the cannons made
their way into the Santa Barbara Channel. There
are, however, many theories. They may have been
lodged at the bottom of the ocean during a shipwreck.
Sometimes, when ships ran aground, heavy
items like cannon were thrown overboard so the
ship could be refloated. A few have suggested that
Sir Francis Drake may have left the cannon behind
during his 1578 visit to California. This theory is
extremely doubtful because the cannon are believed
to have been built in the 18th century, and
there is no other evidence that Drake actually entered
the Santa Barbara Channel.
Another theory suggests the cannon came from the Santa Barbara schooner Dorotea, which foundered near the Goleta Slough around 1829 or 1830. The cannon possibly were thrown overboard at this time. When the Dorotea was sold to Santa Barbara resident Jose De La Guerra, the ship's bill of sale listed four six-pound guns and one three-pound gun. The Goleta cannon consist of four four-pound guns and one three-pounder, but some believe that the variance occurred because it is difficult to see a difference between the cannon sizes unless actually measured. It is improbable, however, that we will ever know the true source of the cannon.
How were the cannons restored?
When discovered, the cannon were covered with
sand, gravel, and magnatite. They were stored in
water until restoration began to prevent the iron
from exfoliating. The heavy encrustation materials
were chipped away, and the cannons then underwent
an electrolysis treatment to remove salts
from the iron. Student volunteers at UCSB carefully
cleaned the cannons before bathing them in
alcohol and tannic acid. Following the final bath,
each cannon was dipped in 350 degree microcrystalline
wax and pronounced ready for display.
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