Editing USS Constitution (section)

===Restoration===
In 1970, another survey was performed on her condition, finding that repairs were required but not as extensively as needed in the 1920s. The US Navy determined that a commander was required as commanding officer—typically someone with about 20 years of seniority; this would ensure the experience to organize the maintenance that she required.<ref>Martin (1997), p. 363.</ref> Funds were approved in 1972 for her restoration, and she entered dry dock in April 1973, remaining until April 1974. During this period, large quantities of [[Northern Red Oak|red oak]] were removed and replaced. The red oak had been added in the 1950s as an experiment to see if it would be more durable than the live oak, but it had mostly rotted away by 1970.<ref name="Martin365"/>