GB895814A - Improvements in or relating to apparatus for pelagic towed net fishing - Google Patents
Improvements in or relating to apparatus for pelagic towed net fishingInfo
- Publication number
- GB895814A GB895814A GB21905/60A GB2190560A GB895814A GB 895814 A GB895814 A GB 895814A GB 21905/60 A GB21905/60 A GB 21905/60A GB 2190560 A GB2190560 A GB 2190560A GB 895814 A GB895814 A GB 895814A
- Authority
- GB
- United Kingdom
- Prior art keywords
- net
- stylus
- depth
- ship
- marks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 241001422033 Thestylus Species 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K73/00—Drawn nets
- A01K73/02—Trawling nets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/56—Display arrangements
- G01S7/60—Display arrangements for providing a permanent recording
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
Abstract
895,814. Echo-sounding apparatus. ATLASWERKE A.G. June 22, 1960 [Aug. 24, 1959], No. 21905/60. Class 40(7). A fishing net 1 is towed by lines 2, 3 at an adjustable distance below and behind a ship which carries a recorder 12, an echosounding transducer 8 and a manometer 9 are mounted on the top rope 7 of the net, and the transmission contact 25 is automatically adjusted in relation to recording stylus 16 travel in dependence on the measured depth of the net in order that transducer 8 is energized from generator 28 when the stylus passes through the point on depth scale 14 corresponding to the depth of the net. The separation between marks 34 and 36 indicates the net opening and marks 37 the sea bed and, to compensate for the distance of the net behind the ship, displacement of the recording chart or stylus in the direction 13 or opposite thereto may be effected. Cable 10 may have a single core, sea return being utilized as described in Specification 894,978. Specification 732,608 also is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE895814X | 1959-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB895814A true GB895814A (en) | 1962-05-09 |
Family
ID=6847895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21905/60A Expired GB895814A (en) | 1959-08-24 | 1960-06-22 | Improvements in or relating to apparatus for pelagic towed net fishing |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB895814A (en) |
-
1960
- 1960-06-22 GB GB21905/60A patent/GB895814A/en not_active Expired
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