Standard Guide for Weight Control Technical Requirements for Surface Ships

SCOPE
1.1 This guide provides recommended weight control technical requirements for surface ships and discusses different types of weight estimates, reports, and weight control procedures. It contains a weight classification that will assist in achieving uniformity by standardizing the weight-reporting system.
1.2 This guide is applicable to ships designed and constructed in inch-pound units of measurement and to ships designed and constructed in SI units of measurement. Whenever inch-pound units are shown or referred to in the text, or in example formats included in this guide, it is to be understood that corresponding SI units may be substituted if applicable to a ship designed and constructed in SI units, provided that whichever system is used, it is consistently used in all weight control reporting documentation for the ship.

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Publication Date
09-May-2003
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
Designation:F1808–03
Standard Guide for
1
Weight Control Technical Requirements for Surface Ships
This standard is issued under the fixed designation F1808; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) 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 shipdesigninformation,forexample,specifications,drawings,
and so forth, available at the time of award.
1.1 This guide provides recommended weight control tech-
3.1.2 as-built weight and center of gravity estimate, n—a
nical requirements for surface ships and discusses different
detailed final estimate of light ship weight and centers of
types of weight estimates, reports, and weight control proce-
gravity data, adjusted for inclining experiment results, reflect-
dures. It contains a weight classification that will assist in
ing the as-built ship including the net effect of contract
achieving uniformity by standardizing the weight-reporting
modifications.
system.
3.1.3 center of gravity, n—the point through which the
1.2 This guide is applicable to ships designed and con-
resultant of all gravitational forces on a ship or a component
structed in inch-pound units of measurement and to ships
passes.Thelocation,abalancepoint,atwhichtheentireweight
designed and constructed in SI units of measurement. When-
of a ship may be considered to be concentrated.
everinch-poundunitsareshownorreferredtointhetext,orin
3.1.4 deadweight, n—the total carrying capacity of a ship
example formats included in this guide, it is to be understood
including weight of cargo, fuel, lubricating oil, fresh water in
that corresponding SI units may be substituted if applicable to
tanks, stores, passengers and baggage, and crew and their
a ship designed and constructed in SI units, provided that
effects.
whichever system is used, it is consistently used in all weight
3.1.5 inclining experiment, n—a procedure performed on a
control reporting documentation for the ship.
completed, or almost completed, ship to establish experimen-
2. Referenced Documents tally the light ship values of the displacement and the vertical,
longitudinal, and transverse positions of its center of gravity
2.1 ASTM Standards:
(see Guide F1321 for detailed procedures).
F1321 Guide for Conducting a Stability Test (Lightweight
3.1.6 independent weight and center of gravity estimate,
Survey and Inclining Experiment) to Determine the Light
2
n—the estimate of light ship weight and centers of gravity
Ship Displacement and Centers of Gravity of a Vessel
performed by the shipbuilder shortly after award of the
F1332 Practice for Use of SI (Metric) Units in Maritime
shipbuilding contract based on the ship design information
Applications (Committee F25 Supplement to IEEE/
2
available at the time of award. When compared with the
ASTM-SI-10)
owner’s estimate and upon resolution of differences, an agreed
3. Terminology
upon weight and center of gravity estimate will result.
3.1.7 light ship weight, n—theweightoftheshipwithallits
3.1 Definitions:
equipment and outfit, including permanent (fixed) solid or
3.1.1 agreed weight and center of gravity estimate, n—an
liquid ballast, spare parts that are carried on board, water in
estimate of light ship weight and centers of gravity data,
boilers at operating levels, machinery including Marine Sani-
mutually agreed upon between the owner and the shipbuilder
tation Device units in working condition, lubricating oil in all
shortly after award of the shipbuilding contract, based on the
machinery, but not in storage tanks, and liquids in all piping
systems.
1
3.1.8 longitudinal center of gravity (LCG), n—the point
This guide is under the jurisdiction of ASTM CommitteeF25 on Ships and
Marine Technology and is the direct responsibility of SubcommitteeF25.07 on
throughwhichthegravitationalforcesonashippass,measured
General Requirements.
longitudinally from amidships, measured from the forward
Current edition approved May 10, 2003. Published June 2003. Originally
perpendicular,orinsomecases,measuredfromtheaftperpen-
approved in 1997. Last previous edition approved in 2002 as F1808–97a (2002).
2
Annual Book of ASTM Standards, Vol 01.07. dicular.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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F1808–03
3.1.9 transverse center of gravity (TCG), n—the point estimating in the design stage and during construction can one
throughwhichthegravitationalforcesonashippass,measured beensuredthatpositivestabilitywillb
...

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