Model of Robert Duncan's screw propeller, with stern frame and rudder, as fitted to the Egyptian government yacht 'Sareea
1886-1887
1886-1887
1916-1970
1916-1970
1916-1970
2003
1907-1908
1936-1937
1880-1883
1923-1931
1929-1933
1932-1933
1932-1933
1926-1946
1935-1977
1828-1857
1865-1870
1858
1968-1974
1843-1929
1923-1931
1836
1847-1891
1914-1930
1909
2005-2006; 2014
1896-1912
1936-1937
1880
1921-1931
1924-1931
1855-1891
1930
1878-1879
1843-1929
1836-1857
1839-1859
1860-1911
1915-1936
1929-1931
1906