- Weight in Water: A body submersed in water reduces its weight by an amount equal to the weight of the water it displaces. [ Archimedes Principle ]. For example, concrete loses about 40% of its weight when immersed in water.
- Chain must be fit for purpose
- Securing methods for shackles: Wire Large nylon tie-wraps Welding
- Swivel: A swinging mooring must have a swivel. Forged design-not threaded and peened. Stainless steel swivel….pin cross section of 15mm. Steel or composite material….pin cross section of 18mm.
- Buoy: One third reserve buoyancy. Total buoyancy equals one and a half times the weight of all items suspended from the buoy excluding the mooring block. Buoy to have an identification mark.
- Rope for swinging moorings: Modern three strand rope is generally ‘soft lay’ making it easy to splice, but when used on a swinging mooring it can unravel.
FOR A VESSEL OF UP TO 20 FEET LENGTH OVERALL
A mooring block of 500 kg when immersed in water. Homogeneous material. Solid attachment point at least 19mm in cross section.
Bottom shackle: Tested shackle. 19mm minimum cross section.
Riser Chain: 19mm
All additional Shackles: 19mm
Swivel
Mooring Rope: 18mm Multiplait [ Anchorbraid ] Nylon Rope with thimble spliced into lower end. Anti-chafe material. Pick up Buoy.
Mooring Chain: 9mm with large link or welded shackle at ends to accommodate 19mm shackle.
FOR A VESSEL OF UP TO 30 FEET LENGTH OVERALL
A Mooring Block of 1000kg when immersed in water.Homogeneous material.Solid attachment point 19mm in cross section.
Bottom Shackle: Tested shackle. 19mm cross section.
Riser Chain: 19mm chain.
Additional Shackles: 19mm cross section. All shackles to be secured.
Swivel in swinging mooring.
Mooring Rope: 24mm multiplait [ Anchorbraid ] nylon rope with thimble spliced into lower end. Anti-chafe material. Pick up buoy.
Mooring Chain: 12mm cross section. Large link or welded shackle at ends to accommodate 19mm shackle.
FOR A VESSEL OF UP TO 40 FEET LENGTH OVERALL
A Mooring Block of 1500kg when immersed in water. Homogeneous material.Solid attachment point 25mm in cross section.
Bottom Shackle: 25mm cross section. Tested.
Riser Chain: 22mm cross section.
Additional Shackles: 22mm cross section. Secured.
Swivel for swinging moorings.
Mooring Rope: 28mm multiplait [ Anchorbraid ] nylon rope with thimble spliced into lower end. Pick-up buoy.
Mooring Chain: 19mm cross section.