Dynamic Analysis of Splash-zone Crossing Operation for a Subsea Template

Subsea templates are steel structures used to support subsea well components. Normally, offshore crane vessels employed install them the target location on seabed. Crossing splash-zone during lowering of a template is considered most critical phase installation due slamming loads and needs be studied provide operational weather criterion planning phase. In this study, dynamic response analysis has been carried out evaluate allowable sea states for plash-zone crossing templates. The numerical model lifting system, including vessel template, firstly built in state-of-the-art program SIMA-SIMO. Then, with time-domain simulations system under various states. disturbed wave field shielding effects from when calculating hydrodynamic forces template. Statistical modelling responses different realizations estimate extreme application generalized value distribution Gumbel fitting discussed. Moreover, influence vessel, as changing size suction anchor studied.