Mooring Ropes: Types, Uses, and Equipment

Posted on Aug 17, 2024 in Technology

Mooring Ropes: A Comprehensive Guide

Types of Mooring Ropes

Synthetic Fibers

  • Polyamide: Offers good elasticity, heat resistance, and abrasion resistance. It is resistant to oils and organic solvents but not acids.
  • Polyester (Terylene): The most durable type, highly resilient to both wet and abrasive conditions. It resists acids, oils, and organic solvents but not alkali (ammonia).
  • Polypropylene: Similar elasticity to polyester, heat resistant, and lightweight. It floats and has limited resistance to cyclical pressures.

Natural Fibers

  • Hemp: Originally from Russia and Italy, it offers great resistance and was once used for mooring and anchoring.
  • Abaca: More expensive than hemp but much more resilient. It comes from the Musa textilis plant.
  • Sisal: Less harsh than hemp but with lower resistance.
  • Esparto: From the Macroblea Teracisuma plant, it has even lower resistance than sisal and is not recommended for mooring or anchoring.

Advantages of Synthetic Fibers

  • Do not rot or rust
  • Superior resistance

Mooring Rope Applications

Types of Mooring Ropes Based on Function

  • Larges: Lashes out by bow or stern and work towards the bow or stern respectively. They are used to position the boat initially and occur as far forward or backward as possible. They serve to keep the ship from hitting the pier during berthing and prevent longitudinal movement.
  • Springs: Lashes that leave bow or stern and work towards aft or bow respectively (in the opposite direction where they exit). They are used to keep the boat stopped and in position. They prevent longitudinal movement of the boat when docked.
  • Traverses: Moorings working perpendicular to the longitudinal axis of the vessel. They are used to prevent the ship from hitting the dock or aconcha (a type of pier). They keep the ship off the dock, preventing lateral movements.
  • Elbow-Cabos: Leaving the heads of the moving ship and going for, ie if they leave work to bow bow as long. But these are going in the opposite direction to tie, they go to the opposite side of the dock and tied to the concave they are at sea. They prevent the ship from hitting the jetty and facilitate their departure.

Mooring Rope Terminology

  • SF (Safe Factor): The factor by which the SWL (Safe Working Load) is multiplied to determine the MBL (Minimum Breaking Load).
  • Beam Wind: Wind blowing perpendicular to the ship’s length.
  • SWL (Safe Working Load): The maximum tension a mooring can safely hold.
  • MBL (Minimum Breaking Load): The minimum load that breaks a tie.
  • Cubiertason Fittings: Elements that guide and secure ropes on board a ship.
  • Bita: Two iron columns welded to a base, bolted or welded to the deck. They are used in placing merchant marine in the bow and flippers to take turns to mooring ropes after they have been virados.
  • Bozza: A stopper or tool used to hold the tension of a rope or strong ties while ago. The action of a rope or tie Asphodel always involves some risk because of the tension that this may have.
  • Cornamusa: A T-shaped metal piece used for mooring ropes. They are always in pleasure boats, because the bonds are affirmed on deck. Its size is according to the measures of the ship. He made fast the ropes in the same way that the vita, the series of eights.
  • Cabos: A metal guide that guides the path of the lines in a certain direction. Normally placed on the gunwale of the boat or on the same deck. It is essential to avoid damaging the fiber or wood of the boat and to avoid deterioration of the rope. The round ends Non sulen be cut out.
  • Special Alavante: A type of guide rope fitted with rollers. Has less resistance to friction. Is placed on the gunwale or deck of the ship.
  • Closed Fairleads: With horizontal rollers and vertical rollers. They soften the friction to a minimum and whatever direction you go the tie there is a roller that reduces friction.
  • Panama Guide: Located on the centreline of the ship. At the height of the deck or bulwark strake (always in the bow). It is circular or elliptical and has a tube or horn attached to its perimeter so that the edges after continuous work without spoiling it.
  • Maquinilla: A fixed mooring tool on deck to hunt or cast off the moorings, allowing tension to the ropes and make firm. They also store the ropes on their drums while browsing.

Mooring Winches

Mooring winches are classified according to:

  • Automatic or manual operation
  • Number of drums associated with each engine
  • Simple or divided drums
  • Hydraulic or mechanical brakes
  • Type of riding

Once a mooring has been tacked, the winch shall be made, strong, good braking and disengaging. Thus the brake is an essential piece in any mooring system and that stops the drum and makes the sign painter. Furthermore, the brake will have the tie lascar if the voltage is excessive.