 Their efforts were hindered, especially at York, by disputes between shipwright Thomas Plucknett, who had been selected by Lieutenant General Sir George Prevost, the Governor General, to superintend the work, and officers such as Captain Andrew Gray, a staff officer in the Army in Upper Canada.Plucknett's work was reckoned to be disorganised, as was that of the shipwright at Kingston, who was dismissed and replaced by the more experienced Daniel Allen.Allen in turn was removed after fomenting disputes over working conditions in March 1813.