GB1318537A - Apparatus for aiming a pelagic trawl at a shoal of fish - Google Patents

Apparatus for aiming a pelagic trawl at a shoal of fish

Info

Publication number
GB1318537A
GB1318537A GB4317570A GB4317570A GB1318537A GB 1318537 A GB1318537 A GB 1318537A GB 4317570 A GB4317570 A GB 4317570A GB 4317570 A GB4317570 A GB 4317570A GB 1318537 A GB1318537 A GB 1318537A
Authority
GB
United Kingdom
Prior art keywords
trawl
echo
axis
transducers
mouth
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
Application number
GB4317570A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Simrad AS
Original Assignee
Simrad AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Simrad AS filed Critical Simrad AS
Publication of GB1318537A publication Critical patent/GB1318537A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/96—Sonar systems specially adapted for specific applications for locating fish
    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/42—Simultaneous measurement of distance and other co-ordinates
    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/87—Combinations of sonar systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
GB4317570A 1969-09-15 1970-09-09 Apparatus for aiming a pelagic trawl at a shoal of fish Expired GB1318537A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO367269A NO120174B (enrdf_load_stackoverflow) 1969-09-15 1969-09-15

Publications (1)

Publication Number Publication Date
GB1318537A true GB1318537A (en) 1973-05-31

Family

ID=19879774

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4317570A Expired GB1318537A (en) 1969-09-15 1970-09-09 Apparatus for aiming a pelagic trawl at a shoal of fish

Country Status (4)

Country Link
DE (1) DE2045234A1 (enrdf_load_stackoverflow)
FR (1) FR2061714A1 (enrdf_load_stackoverflow)
GB (1) GB1318537A (enrdf_load_stackoverflow)
NO (1) NO120174B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31026E (en) 1975-09-18 1982-09-07 Santa Fe International Corporation Navigation system for maneuvering a structure about a submerged object
WO2013171688A3 (en) * 2012-05-16 2014-03-13 Scantrawl As Trawl height indicator
WO2013042076A3 (en) * 2011-09-22 2014-05-08 Scantrawl As System and method for controlling and displaying parameters during trawling
WO2019235935A1 (en) 2018-06-05 2019-12-12 Remøy Sea Group AS Dynamic trawl steering system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532437B1 (fr) * 1982-08-31 1985-12-27 Commissariat Energie Atomique Dispositif a ultrasons pour le reperage d'un objet
DE3832700C2 (de) * 1988-09-27 1997-05-22 Vdo Schindling Vorrichtung zum rückwärtigen Kollisionsschutz von Fahrzeugen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31026E (en) 1975-09-18 1982-09-07 Santa Fe International Corporation Navigation system for maneuvering a structure about a submerged object
WO2013042076A3 (en) * 2011-09-22 2014-05-08 Scantrawl As System and method for controlling and displaying parameters during trawling
WO2013171688A3 (en) * 2012-05-16 2014-03-13 Scantrawl As Trawl height indicator
WO2019235935A1 (en) 2018-06-05 2019-12-12 Remøy Sea Group AS Dynamic trawl steering system
EP3813523A4 (en) * 2018-06-05 2022-03-02 Remøy Sea Group AS Dynamic trawl steering system

Also Published As

Publication number Publication date
DE2045234A1 (enrdf_load_stackoverflow) 1971-03-18
NO120174B (enrdf_load_stackoverflow) 1970-09-07
FR2061714A1 (enrdf_load_stackoverflow) 1971-06-25

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed