Skip to main content
Membership
Donate
Shop
Venue hire
Search
Royal Museums Greenwich
Main navigation
Menu
Royal Museums Greenwich
Search
Close
Plan your visit
Back
Plan your visit
Tickets and prices
Getting here
Accessibility
Family visits
Group visits
School visits
Cutty Sark
Cutty Sark
Open daily 10am-5pm
Last entry 4.15pm
Adult: £22 | Child: £11
Members go free
Free
National Maritime Museum
National Maritime Museum
Open daily 10am-5pm
Last entry 4.15pm
Free entry
Booking recommended
Free
Queen's House
Queen's House
Open daily 10am-5pm
Last entry 4.15pm
Free entry
Booking recommended
Royal Observatory
Royal Observatory
Open daily 10am-5pm
Last entry 4pm
Adult: £24 | Child: £12
Members go free
What's on
Back
What's on
Exhibitions
For families
Member events
Talks and tours
National Maritime Museum
Family fun
Astronomers Take Over
This brand-new interactive gallery gives curious minds aged 4 to 104 the space to play, learn and explore!
Queen's House
Events and festivals
In conversation with Richard Wright: celebrating 10 years of the Great Hall ceiling
Hear first-hand about the ideas, craftsmanship, and legacy behind this spectacular ceiling installation
Royal Observatory
Family fun
October half term at the Royal Observatory
Come along for astronomy talks, spooky tours for Halloween and more
Stories
Back
Stories
Maritime history
Space and astronomy
Art and culture
The ocean
Time
Royal history
ZWO Astronomy Photographer of the Year 2026 winners
Take a look at the winning images in the world's biggest space photography competition
What is the Merchant Navy?
Discover the role and history of the commercial shipping fleet – and its connections with Royal Museums Greenwich
Dog that dived to the bottom of the ocean surfaces at the National Maritime Museum
A toy that journeyed to the very bottom of the ocean has been donated to the National Maritime Museum.
Collections
Back
Collections
Conservation
Research
Donating items to our collection
Collections Online
Search our online database and explore our objects, paintings, archives and library collections from home
The Prince Philip Maritime Collections Centre
Come behind the scenes at our state-of-the-art conservation studio
Caird Library
Visit the world's largest maritime library and archive collection at the National Maritime Museum
Learn
Back
Learn
Learning resources
School visits and sessions
SEND sessions and resources
Opportunities for teachers
Adult learning
Practitioner residencies
Schools
From astronomy to maritime history, bring your subjects to life with our school sessions and resources
Communities
Explore our groups, programmes and events developed with local and connected communities
Young people
Gain skills and hands-on experience with a range of creative activities, projects and events
Support us
Back
Support us
Become a member
Donate
Corporate partnerships
Become a patron
Leave a legacy
Commemoration and celebration
Our sites
Cutty Sark
National Maritime Museum
Queen's House
Royal Observatory
Membership
Donate
Shop
Venue hire
Search
Beta
Back to all results
Explore our Collection
Objects
Library
Archive
Search our collection
filters…
Search
Catalogue Section
Select…
Catalogue Section
Catalogue Section
Public records: records of the central administration of the Royal Navy and the Merchant Navy
Level
Select…
Level
Level
COLLECTION
FILE
ITEM
SERIES
Creator
Select…
Creator
Creator
Admiralty Compass Observatory
Apply Filter
Date Range
Select…
Date Range
Date From
Select...
1766
1814
1826
1837
1840
1842
1843
1845
1846
1847
1848
1849
1850
1854
1855
1859
1862
1864
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1934
1935
1936
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1978
1979
1980
1985
1986
Date To
Select...
1840
1842
1843
1847
1848
1849
1850
1851
1854
1859
1860
1862
1864
1865
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1926
1927
1928
1930
1931
1933
1934
1936
1937
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1974
1976
1978
1979
1980
1981
1985
1986
1993
Show only:
Requestable
With images
Applied Filters
Admiralty Compass Observatory
Clear all
showing 610 archive results
Sort by
Relevance
Object title/name
Object title/name (desc)
Finding reference
Finding reference (desc)
Date
Date (desc)
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1950-08-04
ACO/S&T/22/2
Report "Detection of Submerged Submarines by aircraft" by the Air/Sea Warfare Development Unit, Ballykelly, concerning trial number 300 - an interim report on the bearing accuracy and acoustic range of detection of the British directional radio sono-buoy mark 1, obtained at Portland, Augus…
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1896-07-29
ACO/S&T/20/18
Notes by E W Creak on Mr Verkersk's invention which was to place ships' compasses in an armour protected position to avoid destruction during an action.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1948-10-29
ACO/S&T/22/3
Report on service trial of the automatic dead reckoning instrument system (ADRIS) by the Naval Air Sea Warfare Development Unit and Carrier Trials Unit, Royal Naval Air Station, Lee-on-Solent.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1899-02-01 - 1899-02-07
ACO/S&T/20/22
Table showing observations made after reported disturbance of compasses in the Channel Squadron, Portland on 1 February 1899.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1901-10-19 - 1901-10-21
ACO/S&T/20/23
Memorandum by James Henderson, Superintendent of Compasses, to the Hydrographer concerning the relative position of dynamos, motors and compasses and chronometers on board ship.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1893-03-01
ACO/S&T/20/4
Report to the Hydrographer on Lieutenant Wells' patent binnacle light, including a letter from EE Lucy, HMS BLONDE.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
ACO/S&T/20/5
Notes on Nickel Steel, no date
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1892
ACO/S&T/20/6
Reports received on results of trial of lamps fitted with deck candles for lighting torpedo steering compasses in lieu of the ordinary oil lamps (1 page).
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1893
ACO/S&T/20/7
Report by Captain C Young, HMS VOLAGE, concerning compass disturbance by sentry bayonets, with additional material on compass disturbance.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1889-08-26
ACO/S&T/20/9
Letter from J F Stuart, HMS SEVERN, Hakodate (Japan), to Captain Creak, ACO Compass Department, concerning the use and action of compasses on board.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1890-1894
ACO/S&T/20/11
Correspondence, notes and advertising circular from Mr Thompson, Australia, concerning the invention of the Malbon compass, 1894.…
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1890
ACO/S&T/20/13
Instructions for use of A Norholms patent multiplication compass with universal compensation and notes by E W Creak of the ACO.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1971
ACO/S&T/29/18
Technical notes, 'An Investigation into Certain Hydrographic Equipment Errors, Part 1.'
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1952
ACO/S&T/13/5
Notes on the E2 Compass, with particular application to fitting in land vehicles, CD Pamphlet No.36.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1939-1945
ACO/S&T/13/6
Report entitled, 'Records of Admiralty Research & Development: Magnetism', printed in 1950.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1939-1945
ACO/S&T/13/7
Report on the Records of Admiralty Research & Development, Navigation, 1950.
Admiralty Compass Observatory: reports, technical notes and memoranda from the Royal Aircraft Establishment (RAE), Farnborough (Manuscript)
1926-1937
ACO/S&T/14/3
RAE reports. Subjects include the Sperry gyro-magnetic compass and an earth inductor compass for aircraft.
Admiralty Compass Observatory: reports, technical notes and memoranda from the Royal Aircraft Establishment (RAE), Farnborough (Manuscript)
1947-1950
ACO/S&T/14/4
RAE technical notes. Subjects include gyro-magnetic compasses, the Sperry (USA) K1 bombing and navigating system and sideslip detectors for use on helicopters.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1968
ACO/S&T/29/10
Progress Report On Heading Transfer Tests.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1969
ACO/S&T/29/11
S.I.N.S (Ships' Inertial Navigation Systems) Gyroscopic Performance Progress Report No.1.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1969
ACO/S&T/29/12
Report, Temperature Dependence of S.I.N.S (Ships' Inertial Navigation Systems) Gyro Torque Generator Scale Factor.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1970
ACO/S&T/29/13
Report, Evaluation of Omega Navigation System in Submarines.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
1970
ACO/S&T/29/15
Report, Sperry C2J Compass System, Laboratory Assessment by D Ruck.
Admiralty Compass Observatory, 1842-1971 (Manuscript)
ACO/S&T/13/1
Catalogue of Section R, gives detailed listings of the R reports broken down further into individual detail.
First
Prev
Page
1
Page
2
Current page
3
Page
4
Page
5
…
Next
Last
Loading filters
Royal Museums Greenwich
Close
Search
Want to search our collection? Search here.
Back to top