Standard Specification for Wildcats, Ship Anchor Chain

ABSTRACT
This specification covers wildcats as used in windlasses to haul in and pay out anchor chain on board ships. Wildcats shall be classified based on materials and manufacture. Wildcats shall be fabricated from structural steel plate, medium-strength carbon steel castings, or high-strength steel castings, joined by electric welding. Wildcats shall conform to specified dimensions, depending on chain size. Wildcats shall be tested to fit sample chain. Workmanship, finish, appearance, packaging, and making shall conform to the requirements of this specification.
SCOPE
1.1 This specification covers wildcats as used in windlasses to haul in and pay out anchor chain on board ships. An associated chain stopper is used to secure the chain while the ship is anchored, or the anchor is housed.
1.2 Wildcats are of the five whelp type for use with stud link anchor chain conforming to the American Bureau of Shipping Grades 1, 2, and 3. Wildcat dimensions are provided for chains in integral 1/8-in. (3-mm) steps, ranging in size from 3/4 to 41/8 in. (19 to 104 mm). Wildcat dimensions for chains in intermediate 1/16-in. (1.5-mm) steps are not provided, but wildcats in these sizes are permitted within the scope of this specification.
1.3 Wildcats are configured to pass detachable links oriented parallel or perpendicular to the wildcat shaft centerline.
1.4 The values stated in inch-pound units are to be regarded as the standard. This specification is for use with anchor chain that is measured in inch-pound units.

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Publication Date
30-Apr-2006
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ASTM F765-93(2006) - Standard Specification for Wildcats, Ship Anchor Chain
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F765 −93(Reapproved 2006) An American National Standard
Standard Specification for
1
Wildcats, Ship Anchor Chain
ThisstandardisissuedunderthefixeddesignationF765;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope American Welding Society Structural Welding Code,Chap-
4
ter D1.1
1.1 This specification covers wildcats as used in windlasses
to haul in and pay out anchor chain on board ships. An
3. Classification
associated chain stopper is used to secure the chain while the
3.1 The size of the wildcat is identified by the chain size.
ship is anchored, or the anchor is housed.
3.2 Wildcats are furnished in four types as follows:
1.2 Wildcatsareofthefivewhelptypeforusewithstudlink
3.2.1 Type I—Fabricated from structural steel plate for
anchor chain conforming to theAmerican Bureau of Shipping
flanges, hubs, whelps, and chain pockets, joined by electric
Grades1,2,and3.Wildcatdimensionsareprovidedforchains
1 3 1
welding. Surface hardness is approximately 150 HB.
in integral ⁄8-in. (3-mm) steps, ranging in size from ⁄4 to 4 ⁄8
3.2.2 Type II—Fabricated from structural steel plate for
in. (19 to 104 mm). Wildcat dimensions for chains in interme-
1
flanges, hubs, and chain pockets; and high-strength steel
diate ⁄16-in. (1.5-mm) steps are not provided, but wildcats in
castings for whelps, joined by electric welding. Surface hard-
these sizes are permitted within the scope of this specification.
nessisapproximately150HBforflangesandhubsand300HB
1.3 Wildcats are configured to pass detachable links ori-
for whelps.
ented parallel or perpendicular to the wildcat shaft centerline.
3.2.3 Type III—Cast from medium-strength carbon steel
1.4 The values stated in inch-pound units are to be regarded
castings to provide a surface hardness of approximately 150
as the standard. This specification is for use with anchor chain
HB.
that is measured in inch-pound units.
3.2.4 Type IV—Cast from high-strength steel castings to
provide a surface hardness of approximately 300 HB.
2. Referenced Documents
2
4. Descriptions of Terms
2.1 ASTM Standards:
A27/A27MSpecification for Steel Castings, Carbon, for
4.1 chain groove—circumferential groove at the chain cen-
General Application
terline to provide clearance for links passing normal to the
A36/A36MSpecification for Carbon Structural Steel
wildcat shaft centerline.
A148/A148M Specification for Steel Castings, High
4.2 chain pockets—recessesbetweentheflangesandwhelps
Strength, for Structural Purposes
into which links with flat side orientated parallel to the wildcat
E10Test Method for Brinell Hardness of Metallic Materials
shaft centerling lay.
2.2 Other Documents:
4.3 detachable link—a “C” shaped link, closed by means of
American Bureau of Shipping, Rules for Building and
apairofclosingpiecesandataperpin,andusedtojoinanchor
3
Classing Steel Vessels,Section 43.11 Equipment
chain lengths and appendages into a continuous length aboard
ship.
4.4 flanges—circumferential rims on the outside of the
1
This specification is under the jurisdiction of ASTM Committee F25 on Ships
whelps, chain pockets, and chain groove.
and Marine Technology and is the direct responsibility of Subcommittee F25.03 on
Outfitting and Deck Machinery.
4.5 link grip—the inside dimension of a chain link repre-
Current edition approved May 1, 2006. Published May 2006. Originally
senting the effective length of a chain link in an assembled
approved in 1982. Last previous edition approved in 1998 as F765–93 (1998).
chain. Generally four times the nominal size of a stud link
DOI: 10.1520/F0765-93R06.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
anchor chain, see Fig. 1.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
Available from American Bureau of Shipping (ABS), ABS Plaza, 16855 Available from TheAmerican Welding Society (AWS), 550 NW LeJeune Rd.,
Northchase Dr., Houston, TX 77060. Miami, FL 33126.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F765−93 (2006)
FIG. 1 Chain Wrap Test
4.6 whelps—protrusions on the inside of the flanges of the heat-treated. Material for Type III wildcats shall conform to
wildcat that resemble gear teeth and of such shape and Specification A27/A27M, Grade 70-40, quenched and tem-
dimensionssoastofollowthepathofthechain,asitentersand pered. Material for Type IV wild
...

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