HYDROGRAPHY, METEOROLOGY, NAVIGATION, AND ASTRONOMY GROUPS.
H1 |
Hydrography, oceanography, and allied topics. |
H2 |
Navigation and navigational aids. |
H3 |
Obstructions to navigation. |
H4 |
Meteorology. |
H5 |
Astronomy and astronomical reports. |
H6 |
Physics. |
H7 |
Time. |
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H1 HYDROGRAPHY, OCEANOGRAPHY, AND ALLIED TOPICS.
- (For Grand Divisions, Water, see QH; for Geographic Divisions, Water, see QX)
- H1-1 Anchorages and Harbors(includes reports of dredging).
- Anchorages, forbidden.
- Berthing facilities. (See L24).
- H1-2 Channels (includes reports of dredging).
- H1-3 Charts and Hydrographic publications.
- Request for.
- H1-4 Distances.
- H1-5 Earthquakes(seismic disturbances).
- H1-6 Fish banks, nets, stakes, etc.
- H1-7 Islands(new ones, existence, nonexistence, change of form, location on charts, etc.).
- H1-8 Magnetism and magnetic disturbances.
- H1-9 Ocean currents. Gulf, Japanese, Equatorial, etc.
- Bottle papers.
- H1-10 Reefs, rocks, shoals, and banks.
- H1-11 Rips and tide rips.
- H1-12 Rivers and canals.
- H1-13 Routes, ocean.
- H1-14 Sea level, tides.
- H1-15 Sea water.
- Constituents and specific gravity.
- Discolored.
- Great waves.
- Oil spots.
- Oil used to calm sea.
- Temperature.
- Tidal waves.
- Waterspouts.
- H1-16 Sound, sound waves, and echoes.
- Aberrations and silent areas.
- Means of detecting.
- H1-17 Soundings, deep-sea, etc.
- H1-18 Surveys.
- Aircraft surveys.
- Hydrographic.
- Reconnaissance.
- Topographic.
- H1-19 Trial courses, location of (obsolete, see NE.).
- H1-20 Volcanoes.
- H1-21 Chart portfolios.
- H1-22 Pollution of navigable waters.
- H1-23 Air routes.
- H1-24 Whales, seals, etc., observation of.
- H1-25 Geographic positions.
- Charted positions.
- Latitude and longitude established.
- Observation spots.
- Records and methods of establishing.
- H1-28 Geographic names, decisions of Geographic Boards.
- (For geographic locations, see also QG.)
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H2 NAVIGATION AND NAVIGATIONAL AIDS.
- H2-1 Anchorage.
- Anchors for mooring.
- H2-2 Beacons and ranges (other than radio and aerial).
- H2-3 Buoys and dolphins, channel, mooring, range, and rack.
- H2-4 Buoys, surveying.
- H2-5 Fixing position (including computations and formulae).
- H2-6 Hydraulics (as applied to action of passing vessels).
- H2-7 Leader systems.
- H2-8 Lighthouses and light vessels (location and character).
- H2-9 Range-finder signals and stations.
- H2-10 Rescue work.
- H2-11 Seamanship.
- H2-12 Structures, trees, earth formations (aids).
- H2-13 Submarine signaling stations.
- H2-14 Target and torpedo ranges.
- H2-15 Zone system (obsolete, see H7-Time).
- H2-16 Fog-signal stations.
- Beacons.
- H2-17 International ice patrol.
- H2-18 Time balls and shapes.
- H2-19 Life-saving stations(location and character).
- H2-20 Radio beacons, ships and aircraft.
- H2-21 Magnetic survey ranges.
- Correspondence on erection and repair of structures, see N20. For work on light vessels, see QS9.
H3 OBSTRUCTIONS TO NAVIGATION.
- H3-1 Buoys adrift.
- H3-2 Derelicts(vessels adrift out of control).
- H3-3 Logs, timbers, trees, small boats, rafts, broken parts of vessels, etc.
- H3-4 Fog and smoke.
- H3-5 Ice, icebergs, and ice formations.
- H3-6 Mines, surface or subsurface, explosive or nonexplosive.
- (See also S76 Mines.)
- H3-7 Sea and gulfweed.
- H3-8 Wrecks (vessels fast to bottom or stranded).
- H3-9 Clearance of structures over navigable waters.
- H3-10 Obstructions to air navigation (high buildings, towers, chimneys, flagpoles, high-tension wires, etc.).
H4 METEOROLOGY AND AEROLOGY.
- H4-1 Aurora borealis and aurora australis.
- H4-2 Lightning striking ship or affecting the compass(St. Elmo's light).
- H4-3 Meteorolites, meteoroids, meteors, and bolides.
- H4-4 Meteorological and aerological instruments and equipment(aerographs, anamometers, anemographs, barometers, theodolites, pilot balloons, etc.).
- Experimental and development projects.
- Instructions for installation, operation, maintenance, etc.
- Specifications, descriptions, prices, estimates.
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H4 METEOROLOGY AND AEROLOGY-Continued.
- H4-5 Requests or requisitions for aerological instruments equipment, and supplies.
- Invoices.
- Requisitions.
- Shipment notices.
- Surveys.
- H4-6 Observatories and stations; meteorological storm-warning towers and signals.
- H4-7 Weather service (includes communications and instructions concerning).
- Forecasts and advices.
- Observations and reports.
- H4-8 Aerological forms (including instructions therefor).
- H4-9 Weather phenomena.
- Blizzards.
- Floods.
- Fog and fog dispersal.
- Gales.
- Hurricanes.
- Ice formations.
- Monsoons.
- Static electricity.
- Typhoons.
- H4-10 Weather averages and statistics; climatology.(Filed by localities or regions.)
- H4-11 Aerological policy, plans, and programs.
- Annual report data.
- News.
- Progress.
- Quarterly survey data.
H5 ASTRONOMY AND ASTRONOMICAL REPORTS.
H6 PHYSICS.
H7 TIME.
- Central.
- Daylight saving.
- Eastern.
- Greenwich.
- Mountain.
- Pacific.
- Standard.
- Times adopted in other countries and zone systems.
- (For time signals see A6-2.)
- Washington Naval Observatory.
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