This document discusses different types of fishing sinkers used for various fishing applications. It describes pyramid, barrel, split-shot, bullet, dipsey, bank, and claw sinkers. It also discusses deep drop weights used for offshore fishing and mentions materials commonly used for sinkers such as lead, steel, brass, bismuth, tungsten, sand, and high density resins. The document stresses that an ideal sinker material should be environmentally acceptable, cheap, and dense to minimize the size needed for sufficient weight.

1. FISHING SINKER
MANI BHASKAR KUMAR
1802101018
FEN- 121
2nd SEM

2. INTRODUCTION
 A fishing sinker or knoch is a weight used in conjunction with a fishing lure
or hook to increase its rate of sink, anchoring ability, and casting distance.
 Fishing sinkers may be as small as 1 gram for applications in shallow
water, and even smaller for fly fishing applications, or as large as several
pounds or considerably more for deep sea fishing.
 They are formed into nearly innumerable shapes for diverse fishing
applications. Environmental concerns surround the usage of lead and
other materials in fishing sinkers.

3. TYPE OF SINKER
 A large variety of sinkers exist which are used depending on the fish being
pursued, the environment, the current and personal preference.
Pyramid sinkers
 Pyramid sinkers are shaped like a pyramid and are used when it is desirable
to anchor on the bottom of water bodies. They are attached to the terminal
end of fishing line by loops of brass.

4. Barrel or egg sinkers
 Barrel or egg sinkers are rounded and often bead-like with a
narrow hole through which fishing line is threaded. These sinkers
are desirable on rock or debris covered substrates.

5. Split-shot sinkers
 Split-shot sinkers are small and round with a split cutting halfway
through the sinker. The split can be placed on a piece of fishing line
and then crimped closed. This feature makes adding and removing
the weights easy and quick.

6. Bullet sinkers
Bullet sinkers are bullet-shaped and used widely on
largemouth bass fishing for rigging plastic worms "Texas-
style

7. Dipsey
Dipsey sinkers are ovate or egg-shaped and are
attached to the fishing line with a loop of brass wire
embedded in the sinker

8. Bank sinker
Bank sinkers are long
and ovate and have a small
hole at the top for the
fishing line to thread
through.

9. Claw sinker
A claw sinker consists of a sinker weight which is typically of
round shape, and a number of metal wire spikes grouped
around the sinker weight acting as barbs.
Claw sinkers are used in surf fishing on sandy bottoms with
strong currents, mainly to prevent the sinker from getting
carried off with the current.
Upon casting a claw sinker, the line is briefly tugged so that
the claws will dig themselves into the sand, allowing the rig to
stay in place.

11. Deep Drop Weight
A Deep Drop Weight is used to
reach the bottom in deeper offshore
fishing applications.
These fishing weights are typically
cylindrical in shape with a brass
eyelet at the top for attaching to a
rig.
 Weights for this style of sinker
range from one pound to as much as
fourteen pounds.
 Target species include Tilefish,
Grouper, and Swordfish, among
others.

12. Materials
 An ideal material for a fishing sinker is environmentally acceptable, cheap
and dense.
 Density is desirable as weights must be as small as possible, in order to
minimize visual cues which could drive fish away from a fishing operation.
 Steel, brass, and bismuth sinkers have been marketed, but anglers have
not widely adopted them due to their lower density and higher cost
compared to lead. Sandsinkers have also been developed, using sand as
weight.
 However, sand has a comparably low density to that of lead and makes a
poor replacement.

13.  Tungsten is now in use, especially among largemouth bass anglers.
Although several times costlier than lead, tungsten is just under twice as
dense as lead and thus found desirable.
 The environmental effects of tungsten, however, are essentially unknown.
 More recently, terminal tackle manufacturers are experimenting with high
density composite resins.
 These materials present a non-toxic alternative to lead sinkers at a lower
monetary cost than alternative metallic sinkers