Model of Robert Duncan's screw propeller, with stern frame and rudder, as fitted to the Egyptian government yacht 'Sareea
1886-1887
1886-1887
1937
1937
2001
1889
1934-1935
1932-1936
1955-1965
1870-1880
1955; 1830
1970
1985-1995
1825
1948
1931-1970
1946-1956
1902-1917
1933
1889
1927-1934
1958-1960
1963-1967
1912-1916
1956
1934-1940
1955-1965
1921-1930
1953
1950
1896-1904
1701-1900
1927
1895-1905
1888
1930-1932
1926
1891
1933-1934
1923-1925
1910-1911
circa 1900
1912
1965-1977
1902
1901-1911
1929
1955
circa 1898
1908