trawl anchor
Look at other dictionaries:
anchor — a metal device lowered on a line or chain and used to secure a vessel to the sea bed. Also used to secure nets. Anchors have flukes (points that dig into the bottom or grab rocks; the flattened part is called a palm) connecting by arms to a crown … Dictionary of ichthyology
Anchor windlass — An anchor windlass within the forecastle on the main deck of the sailing ship Balclutha. The vertical shaft is rotated by a portion of the capstan above … Wikipedia
anchor seine — Danish seine (a seine or cone shaped otter trawl which is hauled over an area of about 2 square kilometres to a stationary vessel from an anchor buoy, the very long towing ropes disturbing clouds of mud which help herd the fish into the net. Also … Dictionary of ichthyology
commercial fishing — Introduction the taking of fish and other seafood and resources from oceans, rivers, and lakes for the purpose of marketing them. Fishing is one of the oldest employments of humankind. Ancient heaps of discarded mollusk shells (shell… … Universalium
Fisheries glossary — This is a glossary of terms used in fisheries, fisheries management and fisheries science. A * Abundance is a measure of how many fish are in a population or a fishing ground. See relative abundance and absolute abundance.* Acoustic survey a… … Wikipedia
Danish seine — a seine or cone shaped otter trawl which is hauled over an area of about 2 square kilometres to a stationary vessel from an anchor buoy, the very long towing ropes disturbing clouds of mud which help herd the fish into the net. Also called anchor … Dictionary of ichthyology
Sponge reef — taxobox image caption = Hexactinellae from Ernst Haeckel s Kunstformen der Natur , 1904 name = Hexactinellid Reef Sponges regnum = Animalia phylum = Porifera classis = Hexactinellida subclassis = Hexasterophora subdivision ranks = Orders… … Wikipedia
Kite types — Colorful delta wing kite Kites are tethered flying objects which fly by using aerodynamic lift, requiring wind, (or towing), for generation of airflow over the lifting surfaces. Contents 1 Kite … Wikipedia
environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… … Universalium
undersea exploration — Introduction the investigation and description of the ocean waters and the seafloor and of the Earth beneath. Primary objectives and accomplishments Included in the scope of undersea exploration are the physical and chemical… … Universalium
