- The mooring buoys system is an engineered approach to a firmly fixed
anchorage. A system that not only simplifies visitation to a certain
area, but can provide valuable habitat protection as well.
Before the installation, several variables must be considered. Locating
an appropriate site for the mooring buoys, identifying bottom
characteristics and determining the size of vessels that will use the
system will dictate the kind of system (Halas or Manta) as well the
needed installation equipment. To determine the length and size of
buoys, lines, shackles and other hardware, it is necessary to record
information such as water depth, tidal characteristics, currents and
expected wave heights.
If you have questions concerning sites, methods, costs or load
capacity of the different mooring buoy systems , please contact
Environmental Moorings International (EMI) anytime.
EMI is also able to provide on-site consulting and demonstration of
installation techniques.
Project equipment
The "Halas" and the "Manta Ray" anchor system both require
special underwater hydraulic equipment for their installation. The
"Halas" system is used for hard bottom areas, where it is necessary to
use hydraulic equipment to drill a core and implant a pin, using a
special cement or epoxy into a hard surface. The "Manta Ray" system
is used in soft or sandy substrate conditions and requires the use of
an underwater jackhammer and hydraulic loadlocker. These tools can
the powered by the vessels own hydraulic system or a portable
hydraulic unit. The vessel should be capable of managing the load of
tools, dive gear and crew. The divers should be familiar with
underwater work and the necessary equipment. After Manta Ray
installation the shackle, downline and buoy can be attached and used
immediately. The cement or epoxy used in the "Halas" system requires
48 to 72 hours to cure to full strength before the downline can be
attached.
Continued on next page
 | |  | |  | |  | |  | |  |
 | |  | |  | |  | |  | |  |
