Our J-lay towers are capable of laying rigid pipes of diameters up to 36” on the sea bed. They are mainly deployed in deeper water, and more remote locations. We offer fully integrated vessels, or standalone equipment, according to your wishes.

J-lay is used to install rigid pipelines in deep water. With a J-lay system, pipe stalks, consisting of up to six pipes with a total length of 72m, are upended and welded to the seagoing pipe in a near vertical ramp.

Multipurpose DP3 vessel for pipelaying in S-Lay and J-Lay mode, and heavy lifting useful to offshore projects such as decommissioning and windfarm. J-Lay system of 1,500 t laying capability and 2,000 t holding capacity for laying quadruple and triple joints.

2016年7月24日 · J-Lay method can handle a full range of pipeline size and it is particularly suitable for deep water pipeline installation up to 2,000 m (6,560 ft). Furthermore, the J-Lay method can withstand higher underwater current and sea state than the S-Lay method.

Fast-transit, dynamically positioned (DP2) construction vessel with an ultra-deepwater J-lay system rated for 1,653 ST [1,500 MT] dynamic accompanied by two 440 ST [400 MT] Offshore Mast Cranes. S-lay capability from 4 to 60 inches with truss or …

2021年9月18日 · The J-Lay method is used for pipelines with diameter from 10-50” in deep and ultra deep waters. A vessel with a vertical J-lay tower is required. Pieces of pipe are welded together in the tower and lowered vertically in to the seabed (Fig. 2)

2020年8月13日 · 调研国外深水J—lay铺管船及在典型项目中的应用情况；依据规范，核算不同水深情况下允许的海管管径、壁厚分布情况；结合工程项目经验，对比J_lay塔不同节点和工作站情况下海管铺设效率；通过有限元分析，确定拟建的j—lay铺管船海管铺设能力及对应要求。

The J-lay method is intended for deepwater pipeline installation. We have solid experience in delivering complete J-lay systems - from concept design to start-up of operations - including tower structures, tower angle adjustment systems, pipe handling equipment, line-up systems and the control system commissioning onboard.

Abstract: The important design parameters for deepwater semi-submersible crane J-lay vessel are analyzed. Firstly, we investigate the existing J-lay vessels and typical pipeline J-lay...

2022年6月17日 · McDermott has held the christening ceremony for its newly converted Amazon vessel in the Port of Rotterdam, the Netherlands. The vessel has undergone a “sophisticated” conversion from a construction vessel into an ultra-deepwater J-Lay vessel as part of McDermott’s global deepwater subsea strategy.