A study of a tub crane with an unconventional quadruple hook arrangement

Heerema Marine Contractors (HMC) is exploring the possibilities of a new crane vessel. A promising concept is an asymmetric semi-submersible with a single crane placed amidships on port side. A new type of crane is introduced with an unconventional rectangular quadruple hook arrangement with the ability to lift and slew 24,000t. The...

Integral soil-jack-up modelling - Modelling site-specific jack-up response and performing safety assessment

Due to the growing offshore wind energy market and the increasing interest of the oil and gas industry, there is a steadily increasing demand for the use of jack-ups all over the world. Particularly, the number of wind turbine installation vessels has increased from 2 in 2005 to 40 currently, with a yearly growth expectation of 30% till 2020....

Soil-foundation interaction for the Arctic S platform under ice loading

Drilling in the complex and rough conditions in the Arctic areas is challenging. The challenges include harsh environmental conditions, spill recovery, high operating cost, relatively high risk, limited choice of drilling units, international (environmental) laws/regulations etc. The existence of recoverable oil and gas resources have been known...

Installation of a dynamic power cable for a floating offshore wind turbine: A comparative study

The latest Conference of Parties at Paris resulted in an important agreement that 27 percent of the total European energy consumption has to come from renewable energy in 2030. Offshore wind energy is an important resource for renewable energy. The shortage of shallow water areas pushed offshore wind farms into deeper waters. Floating Offshore...