ASTM F765-93(2006)
(Specification)Standard Specification for Wildcats, Ship Anchor Chain
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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
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-
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-
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
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
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
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.
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
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 wildcats shall conform to Speci-
leaves the wildcat. Faces of protrusions are separated by the fication A148/A148M, Grade 150-125, quenched and tem-
chain groove to permit links with the flat side normal to the pered.
wildcat shaft centerline to pass, but blocking links with the flat
6.2 The manufacturer’s name or identification mark, chain
side oriented parallel to the wildcat shaft centerline.
size,andpatternordrawingnumbershallbecastorstampedon
4.7 wildcat—a rotating member specially contoured to re- the wildcat, using minimum ⁄4-in. (19-mm) size characters.
ceive assembled chain links and connecting links around the
Themarkingshallnotappearonawearingsurfaceandshallbe
circumferenceofthememberandofsuitablestrengthtoimpart visible on an assembled windlass.
motion to the chain when rotated.
7. Dimensions
5. Ordering Information
7.1 Wildcat must be fitted to the sample chain, and detach-
5.1 Ordersforwildcatsunderthisspecificationshallinclude
ablelink(seeSection9).PrincipaldimensionsofTypesIIIand
the following:
IV wildcats for chains in steps of ⁄8 in. (3 mm) are shown for
5.1.1 Quantity (number),
information only in Table 1 and Table 2.
5.1.2 Size (chain size),
7.2 Dimensions in Table 1 and Table 2 are developed in
5.1.3 ASTM designation and date of issue,
accordance with the following (see also Fig. 2 and Fig. 3):
5.1.4 Type (I, II, III, or IV),
7.2.1 Bottom of chain pockets are relieved to clear enlarge-
5.1.5 Size, grade, and type of chain,
ments occurring at centers of chain links as manufactured.
5.1.6 Availability of assembled chain and detachable link to
be furnished by the purchaser for test (see Section 9), 7.2.2 Each face of the whelp is a partial frustrum of a cone
developed so that each link whose plane is parallel to the
5.1.7 As-cast or machined dimensions for wildcat bore, hub
width, and outside boss diameter, and wildcat shaft centerline will have end play as noted in Table 1
and Table 2. This end play provides clearance between
5.1.8 Marking (shipping).
nonbearing side of whelp and the end of the next following
6. Materials and Manufacture
link, the centerline plane of which is parallel to the axis of
shaft.
6.1 Material for Type I wildcats shall conform to Specifi-
7.2.3 The inner surfaces of the chain pockets, that form the
cationA36/A36Mforflanges,hubs,whelps,andchainpockets,
flanges of the wildcat, are flat surfaces together forming the
joined by electric welding in accordance withAWS, structural
frustrums of pentagonal pyramids. The traces of the intersec-
welding code Chapter D1.1. Type I wildcats in sizes 2 in. and
tions of these flat surfaces or sides of the frustrums coincide
larger shall be stress-relieved. Material for Type II wildcats
with the centerline of the whelps.
shall conform to Specification A36/A36M for flanges and
hubs, and chain pockets, and Specification A148/A148M for 7.2.4 Thetraceoftheintersectionoftheplaneatthebottom
whelps, joined by electric welding in accordance with AWS, of the chain pocket and the side of whelp forms a hyperbolic
Structural Welding Code, Chapter D1.1, stress-relieved and section of a cone and is therefore a curved line.
F765−93 (2006)
7.2.5 Wildcat radii are as follows with all dimensions
Sin 18° = 0.30902,
having the same units:
Cos 18° = 0.95106,
R =
2 2
R = mean effective radius, measured to the outside g d
ŒS D S D
0.30902 0.95106
centerofalinklayinginthedisplacedpositionin
, and
a pocket, 2
d = bar diameter (chain size),
R = L − 3.36d.
L = overall length of link,
g = link grip,
TABLE 1 Dimensions in Inches of Types III and IV Wildcats for Chains
Size of End Play
RR R R XA B O P S T U V R R
1 2 3 4 5
Chain of Link
3 3 3 3 1 5 15 21 13 3 3 3
⁄4 4.12 4.09 3.00 4.87 2 ⁄8 1 ⁄8 3 ⁄8 ⁄2 1 ⁄16 1 ⁄32 2 ⁄32 ⁄16 ⁄16 21 ⁄8 ⁄4
7 11 1 7 5 13 5 3 7 7 5 1 7
⁄8 4.80 4.77 3.50 5.68 2 ⁄16 1 ⁄2 3 ⁄8 ⁄8 1 ⁄32 1 ⁄8 3 ⁄32 ⁄8 ⁄32 2 ⁄16 1 ⁄2 ⁄8
5 3 3 17 13 1 1 5 3
1 5.49 5.43 4.00 6.49 3 1 ⁄8 4 ⁄8 ⁄4 1 ⁄32 1 ⁄16 3 ⁄2 1 ⁄4 2 ⁄8 1 ⁄4 1
1 1 7 7 3 27 1 31 1 9 1 1
1 ⁄8 6.18 6.12 4.62 7.31 3 ⁄4 1 ⁄8 4 ⁄8 ⁄4 1 ⁄32 2 ⁄8 3 ⁄32 1 ⁄8 ⁄32 32 ⁄16 1 ⁄16
1 1 3 7 3 7 7 1 5 5 1 1
1 ⁄4 6.87 6.81 5.12 8.12 3 ⁄2 25 ⁄8 ⁄8 2 ⁄32 2 ⁄16 4 ⁄16 1 ⁄4 ⁄16 3 ⁄16 2 ⁄2 1 ⁄8
3 3 1 7 7 9 23 7 3 11 5 5 1
1 ⁄8 7.56 7.50 5.62 8.93 3 ⁄4 2 ⁄8 5 ⁄8 ⁄8 2 ⁄32 2 ⁄32 4 ⁄8 1 ⁄8 ⁄32 3 ⁄8 2 ⁄8 1 ⁄8
1 1 1 3 17 1 3 1 3 1
1 ⁄2 8.24 8.18 6.19 9.74 4 ⁄16 2 ⁄4 6 ⁄8 12 ⁄32 3 ⁄16 5 ⁄8 1 ⁄2 ⁄8 43 1 ⁄8
5 3 1 7 1 7 3 27 5 13 5 1 3
1 ⁄8 8.93 8.87 6.75 10.55 4 ⁄8 2 ⁄2 6 ⁄8 1 ⁄8 2 ⁄8 3 ⁄8 5 ⁄32 1 ⁄8 ⁄32 4 ⁄16 3 ⁄4 1
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.