UFC 4-159-03
3 October 2005
Table 6-1. Practical Experience With Anchors
ANCHOR TYPE
DESCRIPTION
Low Efficiency Drag
Reliable if stabilizers are added (see Figure 5-1).
Embedment Anchors
Not very efficient, but reliable through `brute force'.
(i.e., Stockless)
Extensive experience. A large number available in
the U.S. Navy Fleet Mooring inventory. Efficiency
increased by fixing the flukes for the type of soil at
the site. Should be set and proof tested during
installation. Can be used in tandem in various
configurations (NCEL TDS 83-05, Multiple
STOCKLESS Anchors for Navy Fleet Moorings).
Vertical angle of tension member should be
approximately zero at the seafloor.
High Efficiency Drag
Very efficient, highly reliable and especially
Embedment Anchors
designed so it can easily be used in tandem (NCEL
(i.e., NAVMOOR)
TN-1774, Single and Tandem Anchor Performance
of the New Navy Mooring Anchor). Excellent in a
wide variety of soil conditions. These are available
in the U.S. Navy Fleet Mooring inventory. Should
be set and proof tested during installation. Vertical
angle of tension member should be approximately
zero at the seafloor in most cases.
116
Previous Page
