The basics of mathematics remain the same no

Mathematics is as important a tool for you to

matter what the field. Mathematics is divided into

use as a Hull Technician as are manual skills and

several different branches. You will be concerned

good tools. It is a universal language that lets you

with arithmetic, algebra, geometry, and

understand measurements and values written in any

trigonometry.

language. HTs are constantly working with

measurements and calculating weights and quantities

Arithmetic deals with the manipulation of

of materials. HTs develop geometric outlines. This

numbers, using addition, subtraction, multiplication,

chapter is not a complete text in ship mathematics.

and division.

Instead, it is a review of the basic mathematical

knowledge you will need as a Hull Technician.

Algebra uses letters and symbols in place of

numbers and values. These letters and symbols

Tables of weights, measures, and equivalents are

c o n s t r u c t equations that follow established

useful references when you are solving mathematical

mathematic rules.

problems. This chapter contains a number of tables

that you will use frequently.

Geometry investigates the relationships,

properties, and measurements of solids, plane

If you desire further study of mathematics, you

surfaces, lines, angles, graphs, and other geometric

should request the following manuals through your

characteristics.

educational services office:

Trigonometry investigates the properties of

triangles and of trigonometric functions and their

applications.

Volume

2-A,

NAVEDTRA

10062-B

Common fractions are often used in sheet metal

layout, woodworking, piping repairs, and structural

repairs. Most of your measuring devices, such as

the shrink rule, are divided into common fractional

increments.

14-1