Environmental Effects on Ship Structures at Sea using Finite Element Method

Ship is the largest man made vehicle on the earth. Ship is emerging through two different fluids air and seawater which is different scenario than other moving vehicle. So naval architect need to consider the effects due to air and sea water while designing the ship. Every ship continually disturbed by the waves, wind and currents resulting horizontal and vertical motion loads on the ship. Because of bad environmental conditions such as heavy wind and storms, ship experiences linear and rotation motions at sea. These motions crates significant effect on certain marine operations such as drilling, pipe laying, fishing etc. The main purpose of this paper is to study the ship motion effects on structures of the ship. Equipment on main deck is considered for the present study, there are several types of equipment to be placed on the main deck of the ship for mooring, towing, lifting and so on. These equipment are named as deck equipment or deck fittings. In this paper behavior of supporting structure of a lifting crane is considered.