What Is The Role Of Deck Riggers Developed For Marine Offshore Operations?

28 Oct
2021

What Is The Role Of Deck Riggers Developed For Marine Offshore Operations?

History of Riggers

In the 19th century, ships sailed from there all over the world. Rigging was part of the overall strength of the ship when a rigger was a person working with ropes to hoist the sail.

In an era before mechanical haulage, cranes, ropes, pulleys, and muscle power were all that were available to move heavy objects. The rigger is a skilled tradesperson who specializes in the assistance of manual mechanical advantage devices. It comprises a pulley, block, and tackle or motorized such as a crane or derrick or chain hoists (chain fall) or capstan winch.

Riggers attach loads of equipment to cranes or structures using shackles, cables, chains, clamps, or straps, employing pulleys, winches, lifts, or chain hoists (aka chain motors). Quick load calculations are necessary for each load and engineering principles are always in play. Riggers use various suspension techniques to get their load around obstacles on a construction site, loading dock, or event site to the desired location and height.

What is the role of Deck Riggers developed for Marine Offshore operations?

Deck Riggers are responsible for the lifting and moving of heavy and bulky objects, whether aboard ships or around the shipyard. They must develop a working knowledge of selecting and using the various rigging hardware, such as ropes, slings, shackles, clamps, chain falls, and come-a-longs. The rigger apprentice is trained on the proper hand signals involved in heavy lifts. Riggers must also be able to calculate the weight factors and angles used in the proper lifting and transferring of those heavy loads. They are responsible for installing the safety nets, anchor chains, and mooring ropes on board the ships and for line handling of the cables and ropes when docking or undocking the ships.

Deck Riggers is critical to successfully lifting operations for offshore operations. They know which hitches need to be tied and how much weight they can support. They need to understand how the center of gravity will affect a load’s balance and stability as well as how to find the center of balance.

Equipment that is commonly used in rigging includes slings, chokers, shackles, and winches. Through their competent usage, riggers enable heavy equipment to move through confined spaces as well as to tilt, turn or dip loads to avoid any environmental hazards.

Safety is of the utmost importance. This is especially so when heavy objects are being lifted by heavy equipment.