3 October 2005
Table 3-3. Design Issues
Under what conditions will the vessel(s) exit? What are the
operating mission requirements for the ship? What is the
maximum allowable hull pressure?
How much ship motion in the six degrees-of-freedom will be
allowable for the moored ship? This is related to brow
positions and use, utilities, ship loading and unloading
operations, and other requirements. Note that most ships
have a very high buoyancy force and moorings should be
designed to allow for water level changes at a site.
Is the user trained and experienced in using the proposed
system? What is the risk that the mooring would be
improperly used? Can a design be formulated for easy and
How flexible is the design? Can it provide for new mission
requirements not yet envisioned? Can it be used with
Does the design specify readily available commercial
products and is it able to be installed and/or constructed
using standard techniques, tolerances, etc.?
Are initial and life cycle costs minimized?
Can the mooring system be readily inspected to ensure
continued good working condition?
Can the system be maintained in a cost-effective manner?
What special requirements does the customer have? Are
there any portions of the ship that cannot come in contact
with mooring elements (e.g., submarine hulls)?
Mooring Service Types. Four Mooring Service Types are defined to help
identify minimum design requirements associated with DoD ships and piers, and
determine operational limitations. Facility and ship mooring hardware should
accommodate the service types shown in Table 3-4.