A device for magnifying sounding width with outriggers.
At present, in Japan construction and dredging of harbours are rapidly progressing, Hydrographic survey is required to be made there so as to keep chart up-to-date, Especially, for the dredged areas in passages and anchorages, dense sounding must be carried out so that any unsounded bottom may not be left. For this purpose, the author studied to develop a “Device for Magnifying Sounding Width with Outriggers". The most essential requirements that must be taken into account when designing the device were the following: (1) Possibility of using for the survey boat, which is 11 meters long, 2.8 meters wide and has velocity of 6. 7 kt. (2) Little resistance against waves, (3) Strong and light metals must be used to prevent damage, (4) Simple, convenient, reliable and time saving mounting, (5) Keeping constant draft of each vibrator during sounding, This device consists of two outriggers and two big floats and holders of vibrators, The outrigger is strong iron frames of 6,5 m in length and 10 cm in width and is mobile upward or downward at a joint for the outer force, Moreover, the vibrator is able to be set in arbitrary span necessary for the depth in sounding water.
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
1967
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| Online Access: | http://hdl.handle.net/1834/16391 |
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