Produced by the United States Navy during 1940. While the Second World War had broken out, the United States where yet to joinworld war two, united states navy, aircraft navigation

The navigational computer was a circular slide rule used for calculating height and air speed corrections when flying an aircraft. The front cover lifts to reveal a further calculator used to solve vector triangles and plot course alterations. The device was intended to be strapped to a pilot's leg. The instrument was made by White and Gillespie (Melbourne) Pty Ltd c 1940 for the RAAF and used during WW2.Black metal box with silver metal flap top cover affixed with rotating circular rule . Two adjustable belts are affixed to the base of black box. A small spiral bound note book is contained beneath the flap top. RAAF Computer Navigational system MK. III. D. Serial No WG 2833navigation, raaf, computer, aircraft, ww2, 1940

RAAF Manual navigation aircraft calculator(early computer)General issue to allied pilots and navigators for airspeed,altitude,air temperature and drift calculations.Black metal box with SS flap-top cover, moulding and straps for knee attachment.Engraving No. 19, Ident.No. G6B/145. I.C.A.N. Serial No. WG/1716*. Computer Navigational Mk.IIID

This building is still intact at the Nhill Aerodrome. Some of the infrastructure is also in place or can be evidenced by its foundations.The Aeradio building was built on the present aerodrome in 1937. This was one of only sixteen buildings of this type built across Australia and it housed radio communications and guidance equipment. The building and its equipment were part of a comprehensive system of radio towers, signalling and meteorology equipment aimed at providing safer navigation for aircraft travelling throughout Australia. The facility closed in the 1960sThis photo is significant due to it having been taken soon after the building was constructed. It is the earliest known photograph taken on an open to the public day before the receiver aerials were erected.The Aeradio building was built on the present (2012) aerodrome in 1937 or 1938. This was one of only fifteen buildings of this type built across Australia and it housed radio communications and guidance equipment. The building and its equipment were part of a comprehensive system of radio towers lights and signalling equipment aimed at providing safer navigation for aircraft travelling throughout Australia. The facility closed in the 1960sphoto, aeradio, early, civil aviation, dca, dept of civil aviation

An aeronautical chart is a map designed to assist in navigation of aircraft. Using these charts and other tools, pilots are able to determine their position, safe altitude, best route to a destination, navigation aids along the way, alternative landing areas in case of an in-flight emergency, and other useful information such as radio frequencies and airspace boundaries. World aeronautical charts have a scale of 1:1,000,000 and cover relatively large areas. Orbost Aero Club began in 1969 with Basil Dowie as Chair, David Nixon as Secretary/Treasurer. The group went into recess from 1977-1991 closing in 1997. The mid 1960s were boom years in flying training in Australia and the number of Aero Clubs grew rapidly. The Club played a significant role in the establishment of the small airport at Marlo and in the ongoing operation and development of the airport over the years particularly for patient transfer by aerial ambulance. The Orbost Aero Club Club played a significant role in the establishment of the small airport at Marlo and in the ongoing operation and development of the airport over the years.A laminated map of eastern Victoria. A World Aeronautical Chart. It shows elevations, longitude etc and is designed for pre-flight planning as well as pilotage. Top left hand corner - D.F.N.Nixon VH-FWD 12 Kristine Ct Cheletenham 27/7/87orbost-aero-club aeronautical-map

Cologne Cathedral is a renowned monument of German Catholicism and Gothic architecture and is a World Heritage Site. It is Germany's most visited landmark, attracting an average of 20,000 people a day. (Wikipedia) Though not targeted itself, the cathedral was very near to the central railway station and suffered fourteen hits by aerial bombs during World War II. Badly damaged, it nevertheless remained standing in an otherwise completely flattened city. The twin spires were an easily recognizable navigational landmark for Allied aircraft bombing deeper into Germany, which may explain why the cathedral was spared. Repairs were completed in 1956. An emergency repair on the northwest tower's base carried out in 1944 using poor-quality brick taken from a nearby ruined building remained visible until 2005 as a reminder of the war, when it was decided to restore the section its original appearance. (Wikipedia) Black and white photograph showing a grand cathedral from a waterway. It is Cologne (Koln) Cathedral from the Rhine. To the left of the photo bombed buildings are evident. The photograph is believed to have been taken by Frank Wright.cologne cathedral, koln, germany, rhine, bombing, world war two, frank wright

Harold Gatty was born on January 5th, 1903 in Campbell Town, Tasmania. He was a navigator and aviation pioneer. He began his career learning navigation at the age of 14 as a midshipman at the Royal Australian Naval College but withdrew after three years and became an apprenticed ship's officer with the Patrick Steamship Company of Sydney. After W. W. 1 he joined the Australian Merchant Navy where he learned the constellations while standing night watch and became an expert in celestial navigation while serving on many ships sailing between Australia and California. In 1927 he moved to California and opened a navigation school and also a laboratory repairing navigational equipment. At this time he became very interested in air navigation and was aware of the limitations of existing methods and instruments for aerial navigation. He began researching ways of improving aerial navigation. Two early inventions of his were his air sextant and a ground speed and drift indicator which formed the basis of the automatic pilot which later came to be standard equipment on most aircraft. He worked with several record breaking pilots including Ann Morrow Lindbergh (who went on to serve as a navigator for her husband Charles Lindbergh), helped Wiley Post break the world record circumnavigating the Earth, invented a new method of "dead reckoning" that revolutionised the ability to fly safely through cloudy conditions without drifting off course and famously navigated a small plane (whilst trying to cross the Pacific) over 1900 km through fog (with no radio) and using only his dead reckoning techniques, back to their starting point in Japan after they developed fuel problems. In 1932 Gatty received the Distinguished Flying Cross from President Hoover. In 1934 Gatty formed the South Seas Commercial Company with Donald Douglas with the aim to deliver air services to the islands of the South Pacific. The Company was sold to Pan Am but he continued to work for them. In 1935 he went on a sailing expedition investigating several small islands in the South Pacific and was briefly marooned on Baker Island. He was able to use his extensive knowledge of seabird habits to save the crew. He was also very interested in the ability of the Polynesians to navigate using the stars. During the Second World War Gatty was given the honorary rank of Group Captain in the Royal Australian Air Force (RAAF) and worked for the U. S. Army Air Forces (USAAF) in the South Pacific. In 1943 he moved to Washington where he developed a survival book (The Raft Book) specifically for boat crews or air crews flying over the Pacific to help them survive and navigate their life rafts in remote areas of the ocean. The original book was 152 pages long however a condensed version was made which consisted of a 64 page booklet, combined map and star chart and calendar strip enclosed in a waterproof slipcase, to be placed in life rafts for emergency use. The booklet included navigational advice and ideas such as ocean currents, estimation of distance, using a compass, measurement of angles, recognising and steering by the stars, land indications from sea birds, migration of sea birds and insects, sounds from the land, the scent of the land and ocean currents and the colour of the sea etc. After W.W.2 Gatty moved to Fiji and formed Fiji Airways (which later became Air Pacific). Harold Gatty died in August 1957.The two copies of "The Raft Book" are significant as they are a written summary of the many methods of sea navigation (both modern and historical) that existed in the 1940's. They are also a record of Harold Gatty, who played a significant role in the development of modern day aerial navigation using his understanding of different sea navigational techniques.Two rectangular brown packets with waterproof coverings (oiled paper) titled "The Raft Book" by Harold Gatty. Each packet contains a folded 64 page paper booklet with detailed instructions for navigating a small craft in open seas, a folded chart (with a map of the world and oceans, well known constellations, latitude and longitude charts, Greenwich time and a scale for string lengths and Harp scale) and a long folded paper calendar strip.Front of package - "WATERPROOFED EDITION OF/ THE RAFT BOOK / By Harold Gatty / BOOK AND WORLD CHART / FOR / EMERGENCY NAVIGATION / To open envelope tear along above line. If the envelope is used again fold the flap to keep contents dry. 1. This envelope contains a book, chart and tape for emergency navigation. The contents are folded to take up the least possible space and therefore should not be removed until needed. 2. if the chart and tape are immersed in water for a long period, there will be a slight variation in the scale but the strength and resistence to tear of the paper will not be changed. In the event of long immersion, dry the chart and tape as much as possible before using in order to in order to get the greatest accuracy in scale. Front of booklet - THE RAFT BOOK / LORE OF THE SEA AND SKY /By Harold Gatty IMPORTANT FOR YOUR SECURITY/Upon abandoning ship you may have to be your own navigator. Take the following pre/cautions for your own safety:/ Carry a good type of pocket watch / keep it wound and have it running on Greenwich (England) / Time, which you can get from the navigating officer. / Keep track of the date at Greenwich; and on a 24-hour basis, / know whether the time is, say, 6 hours (6 A.M.) showing on / your watch, or 18 hours (6P.M.) Greenwich. / PROECT YOUR WATCH. GET A RUBBER SACK FOR IT (OBTAIN FROM PHARMACIST) AND KEEP IT DRY / KEEP A PENCIL IN YOUR POCKET/ POSITION OF SHIP WHEN ABANDONED PRINTED IN UNITED STATES OF AMERICA GEORGE GRADY PRESS, NEW YORK/COPYRIGHT, 1943, BY HAROLD AND FENNA GATTYflagstaff hill maritime museum and village, shipwreck coast, warrnambool, the raft book, harold gatty, book and world chart for emergency navigation, ww 2, ww ii, navigation, air navigation, aerial navigation, lindbergh, wiley post, dead reckoning, south seas commercial company, u.s. army airforce, usaaf, survival book, life rafts, sea navigation, emergency navigation, fiji airways, harp scale

Air Navigation Facility, Palara Court Montmorency, is made up of a tower and brick building surrounded by wire fences. It is sited in parkland at the end of Palara Court close to the Plenty River Trail. Warning signs are placed on the fences, including: "This facility is provided for the control and guidance of aircraft".Digital copy of colour photographair navigation facility, air control, palara court montmorency

Air Navigation Facility, Palara Court Montmorency, is made up of a tower and brick building surrounded by wire fences. It is sited in parkland at the end of Palara Court close to the Plenty River Trail. Warning signs are placed on the fences, including: "This facility is provided for the control and guidance of aircraft".Digital copy of colour photographsair navigation facility, air control, palara court montmorency

Air Navigation Facility, Palara Court Montmorency, is made up of a tower and brick building surrounded by wire fences. It is sited in parkland at the end of Palara Court close to the Plenty River Trail. Warning signs are placed on the fences, including: "This facility is provided for the control and guidance of aircraft".Digital copy of colour photographair navigation facility, air control, palara court montmorency

Air Navigation Facility, Palara Court Montmorency, is made up of a tower and brick building surrounded by wire fences. It is sited in parkland at the end of Palara Court close to the Plenty River Trail. Warning signs are placed on the fences, including: "This facility is provided for the control and guidance of aircraft". This photograph shows signs at tower.Digital copy of colour photographair navigation facility, air control, palara court montmorency

Air Navigation Facility, Palara Court Montmorency, is made up of a tower and brick building surrounded by wire fences. It is sited in parkland at the end of Palara Court close to the Plenty River Trail. Warning signs are placed on the fences, including: "This facility is provided for the control and guidance of aircraft". This photograph shows the tower on the site.Digital copy of colour photographsair navigation facility, air control, palara court montmorency

All of these Charts / Maps were used for the RSL Museum display " The Mapmakers " ( of RASvy. ) 10 Jun - 10 Aug 2025. .1 Catalogue of Tactical Pilotage Charts, 1:500 000 Scale. Digital Data Base available as at 30Jun 92. This catalogue page shows the extent of the Australian area of responsibility for aeronautical charting. .2 RAAF PLOTTING CHART. NP 22-2 (Navigational Plotting) Tasmania. MERCATOR PROJECTION. This series of charts were used for the training of RAAF Navigators. These charts were produced and printed at the Army Survey Regiment, Bendigo. .3 RAAF PLOTTING CHART AUSTRALIA - SOUTHEAST. NP 27 is Based on LAMBERT CONFORMAL CONIC PROJECTION. This series of charts was used by RAAF Navigators for the planning of RAAF flights. These charts were produced and printed at the Army Survey Regiment, Bendigo. .4 RAAF LONG RANGE PLOTTING CHART. NP 43-4 AUSTRALIA WESTERN. MERCATOR PROJECTION. This series of maps were used for the planning of RAAF flights. Of Particular note these charts were used to plot "Rhumb Lines or loxodromes" where a course crosses all Meridians (Lines of latitude and longitude) at the same angle. On Mercator projection charts Rhumb lines are conveniently shown as straight lines and are also lines of constant compass bearing. Rhumb lines are usually longer than the shortest distance between two points. The shortest distance between two points on the earth's surface is called a "Great Circle Route" which is a route on a circular path on the surface of the earth where the centre of that circle is also the centre of the earth. Great Circle Routes on a Mercator Projection are however curves and harder to plot. These charts were produced and printed at the Army Survey Regiment, Bendigo. .5 RAAF LONG RANGE PLOTTING CHART. NP 43-7 SOLOMON ISLANDS. MERCATOR PROJECTION. Used for the planning of RAAF flights. .6 RAAF AIR STAFF PLANNING CHART NS 137-1 DARWIN NORTH WEST. AZIMUTHAL EQUIDISTANT PROJECTION. This series of charts were used for planning by the staff. The whole chart was produced by joining the four quadrant maps together. The charts are based on a single point of tangency (in this case Darwin) and shows radius (distance) in nautical miles to and from that point. A series of charts were produced centred on each of the major airfields in Northern Australia. These charts were produced and printed at the Army Survey Regiment, Bendigo. .7 RAAF AIR STAFF PLANNING CHART NS 137-2 DARWIN NORTH EAST. AZIMUTHAL EQUIDISTANT PROJECTION. Used for the planning by the staff. The charts are based on a point of tangency and show radius in nautical miles. .8 RAAF AIR STAFF PLANNING CHART NS 137-4 DARWIN SOUTH WEST. AZIMUTHAL EQUIDISTANT PROJECTION. Used for the planning by the staff. The charts are based on a point of tangency and show radius in nautical miles. .9 RAAF AIR STAFF PLANNING CHART NS 137-3 DARWIN SOUTH EAST. AZIMUTHAL EQUIDISTANT PROJECTION. Used for the planning by the staff. The charts are based on a point of tangency and show radius in nautical miles. .10 TACTICAL PILOTAGE CHART. TPC R-13B. LAMBERT CONFORMAL PROJECTION. Used by pilots for flight planning and could be used in flight if necessary for visual navigation using major ground features shown on the chart. These charts also contained aeronautical information such as airfields, radio navigation beacons and obstructions. Contours and height information was shown in feet to be compatible with aircraft altimeters. Each graticule square also contained a Maximum Safe Elevation Figure (MEF) also in feet. Coverage of this series over Australia's area of interest were produced and printed at the Army Survey Regiment, Bendigo. .11 HYDROGRAPHIC CHART. AUS 158. PORT PHILLIP SOUTH and WEST CHANNELS. PROJECTION TRANSVERSE MERCATOR. Used by all people needing to navigate a vessel. Hydrographic charts were printed at the Army Survey Regiment, Bendigo. .12 HYDROGRAPHIC CHART. AUS 157. GEELONG HARBOUR and APPROACHES. PROJECTION TRANSVERSE MERCATOR. Used by all people needing to navigate a vessel. .13 EN ROUTE CHART. AUSTRALIA ERC HIGH. H1 and H2. LAMBERT CONFORMAL CONIC PROJECTION. This series of charts were regularly produced by the RAAF Aeronautical Information Service (AIS) and contained current aeronautical information for pilots. These charts were printed at the Army Survey Regiment, Bendigo..1 Tactical Pilotage Chart Series Catalogue. Current as at 30 Jun 92. .2 Extract of Navigational Plotting Chart " NP22-2 Tasmania " .3 Extract of Navigational Plotting Chart " NP 27 RAAF PLOTTING CHART AUSTRALIA - SOUTHEAST " .4 Extract of Navigational Plotting Chart " RAAF LONG RANGE PLOTTING CHART NP43-4 AUSTRALIA WESTERN " .5 Extract of Navigational Plotting Chart " RAAF LONG RANGE PLOTTING CHART NP43-7 SOLOMON ISLANDS " .6 Extract of Navigational Series " RAAF AIR STAFF PLANNING CHART NS 137-2 DARWIN NORTH WEST " .7 Extract of Navigational Series " RAAF AIR STAFF PLANNING CHART NS 137-1 DARWIN NORTH EAST " .8 Extract of Navigational Series " RAAF AIR STAFF PLANNING CHART NS 137-4 DARWIN SOUTH WEST " .9 Extract of Navigational Series " RAAF AIR STAFF PLANNING CHART NS 137-3 DARWIN SOUTH EAST " .10 Extract of Tactical Pilotage Chart " TPC R-13B " .11 Extract of Hydrographic Chart " PORT PHILLIP SOUTH and WEST CHANNELS " .12 Extract of Hydrographic Chart " GEELONG HARBOUR and APPROACHES " .13 Extract of En Route Chart " AUSTRALIA ERC HIGH " " H1 and H2 " royal australian survey corps, rasvy, fortuna, detachment - army survey regiment, army svy regt, asr