CHAPTER 7
ANCHORING, MOORING, AND TOWING
LEARNING OBJECTIVES
Upon completing this chapter, you should be able to do the following:
1. Describe and identify anchors and their related appendages.
2. Describe the standard methods for anchoring and mooring ships.
3. Describe the procedures for rigging and unrigging for towing a ship and for being
towed. State the basic rules for adjusting lines during the tow.
4. Identify and describe the principal types of salvage.
INTRODUCTION
Federal Supply Catalog lists standard sizes from 3/4 to
4 3/4 inches. Wire diameter is measured at the end and a
In chapter 4 we discussed the procedures involved
little above the center line of the link. The length of a
in tying a ship up to a pier. In this chapter, we discuss
standard link is 6 times its diameter; its width is 3.6
how to anchor a ship and moor it to a buoy. We also
times its diameter. All links are studded; that is, a solid
briefly cover towing and salvage.
piece is forged in the center of the link. Studs prevent
the chain from kinking and the links from pounding on
ANCHORS
adjacent links.
Although several types of anchors are in use aboard
Navy ships, mine countermeasures ships use a
lightweight-type (LWT) anchor called the Danforth
IDENTIFYING ANCHORS
Each anchor of over 100 pounds ordered by the
Naval Sea Systems Command is assigned a serial
number, which is cast or cut into the anchor before it is
delivered. Serial numbers are found on the shank of
lightweight anchors. These numbers must be recorded
in the ship's anchor log. If you receive a new anchor, be
certain to record the proper numbers. Do not confuse
these numbers with other figures, such as the weight of
the anchor.
CHAIN AND ITS APPENDAGES
All Navy ship anchors are connected to some length
of anchor chain. Modem Navy anchor chain is made of
die-lock chain with studs. The size of the link is
Figure 7-1.--Lightweight-type (LWT) anchor.
determined by its diameter, called wire diameter. The
7-1
