Engineering Design & Analysis

Kaysubsea Engineering Co. utilizes its extensive experience and expertise in carrying out Engineering & Analysis for major worldwide projects entailing Submarine Cables Installation, Trenching and Trenchless Techniques as well as Design & Fabrication of specialized tools and structures, to provide Engineering & Design Services and customized solutions to esteemed Clients in the Offshore Industry, offering the following:

Engineering – Full Engineering & Calculations for Key Project Tasks & Equipment
Kaysubsea Engineering’s orientation to provide fully engineered solutions is based on the high quality standards applicable in the offshore industry, enabling enhanced planning of the procedures and assets involved to achieve the best and safest possible outcome.

  • Offshore & Onshore Trenching Feasibility
  • Outfall & Terrestrial Drilling Feasibility Studies
  • Equipment Reverse Engineering

Design – High Quality Customized Solutions
Major projects require customized procedures, tools and equipment to allow for cost-effective and smart solutions in challenging tasks. Kaysubsea Engineering offers the advantage of entailing in-house design experts of various engineering disciplines background, thoroughly applying their expertize to design specialized products, utilizing the most updated 2D and 3D CAD software aid.

Analyses & Simulations – High Accuracy Definition of your Project Parameters
Kaysubsea Engineering employs state-of-the-art software packages (Static & Dynamic Orcaflex Analyses, FEA and Naval Architecture Tools) to model, simulate and fine-tune offshore operations in the fields of:

  • Outfall Cable Pull-ins
  • Cable Main Lay Operations
  • Cables & Pipelines on-bottom Stability
  • Support Vessels Response
  • Mooring Analysis
  • Launching / Recovery Operations for ROV’s, Survey Equipment & Offshore Structures
  • Specialized Lifting Operations

Trenching & Protection

Kaysubsea Engineering offers a complete package of submarine cables and pipelines burial as well as other protection means, depending on each project’s requirements. With some of the protection products being engineered and fabricated in-house as an option, we are capable of offering the following solutions amongst others:

  • Diver-assisted Burial with Jet Sled up to 3m TBD in Jettable Soil
  • Diver Burial using Air-Lift / Hydro-Lift and Hand-jetting Guns
  • Burial & Dredging with Dredging Pumps
  • Beach Burial in any Soil or Rocky Substrate up to 120MPa (Onshore Rock Trenching up to 2.4m TBD)
  • Grouting of Pre-cut Trenches on Land and in Shallow Water
  • Articulated Pipe for Fiber Optic and Power Cables between 18mm and 300mm OD
  • Anchor Clamps for Securing the Cables on Steep / Rocky / Coral Seabed
  • Helix and Screw Anchors
  • Posedonia Screws
  • Concrete Mattresses
  • Sand or Cement Bags
  • Crossings Treatment with Uraducts or other Buffering Materials

Subsea Utilities Installation

Kaysubsea Engineering core field of expertise involves shallow water installations of submarine utilities. Having successfully completed numerous projects globally as senior Project and Engineering Managers, Kaysubsea’s personnel can efficiently deliver cost-effective and successful project engineering and execution in the following:

  • Outfall & Platform (through J-Tube) Pull-in Support of Submarine Fiber Optic / Power Cables and Umbilicals
  • Pre-Laid Shore Ends Installation
  • Shallow Water Pipelines Installation
  • Shallow Water Cable Repairs
  • Cable Transpooling Operations
  • PLGR and Route Clearance
  • OGB Installation
  • Crossings Treatment
  • Cables & Pipelines Protection

Trenchless Installations

Having a global network of highly qualified and well known suppliers of equipment and supporting services, Kaysubsea Engineering is in position to provide a wide range of cost-effective and high quality solutions, from Consultancy to Execution, including in-house Engineering and Design of all HDD & Auger Boring projects undertaken.

Horizontal Directional Drilling (HDD)

  • Kaysubsea specializes in outfall HDD crossings, providing a turn-key solution by including the marine and subsea support needed in such installations, aiming to protect submarine cables at outfalls where traditional trenching is either impractical or not permitted.
  • Kaysubsea has access to a wide range of HDD Rig sizes, from 10T up to maxi Rigs of 250T pulling capacity.

Auger Boring

  • In an effort to supplement the offered services, Kaysubsea is able to undertake Auger Boring installation of up to 56” diameter pipelines, where the HDD technique is often impractical or not cost-effective.

Survey Works

Kaysubsea Engineering performs a variety of Survey Operations for a wide range of applications. Some specialty areas of involvement are listed below:

  • Topographic Surveys
  • Geophysical and Geotechnical Surveys
  • Navigation and Positioning for Construction, Cable Laying, AHT and PLGR Works
  • Route Surveys and DTS for Pipelines and Submarine Cables
  • Underwater Inspection Surveys with either Divers or ROV’s
  • Burial Assessment (BAS) and Environmental Impact Assessment (EIA) Studies

Diving Support

Kaysubsea Engineering offers commercial diving services for inshore and offshore projects to various sectors, including pipeline and submarine cable installation, HDD outfall diving support as well as ports construction and general inspections.
Our highly qualified, experienced and HSE certified dive teams along with our portable diving spreads can deploy anywhere in the world and operate according to local and international standards regime.

Diving Services include the following:

  • Submarine Fiber Optic / Power Cables and Umbilicals Installation & Protection
  • Articulated Pipe, Sand-bags, Posedonia Screws & Anchor Clamps Installation
  • HDD Outfall Installation, Proofing and Inspection Operations
  • Diver Video Surveys and Seabed Probing
  • NDT Inspections for Sheet Piling Condition, Welds, Structural Integrity and Thickness
  • Welding and Cutting using various Techniques
  • Marine Construction Support including Anchors Deployment and Testing
  • Maintenance of In-water Structures and Cathodic Protection

Terrestrial Installations

Kaysubsea Engineering employs a dedicated team responsible for terrestrial pipelines and cables installation, able to deliver turn-key solutions from excavation and ducts installation to pulling or blowing of the cables and splicing prior to final hand-over.
Carrying its expertise in the Telecommunication Industry, Kaysubsea provides Turn-Key solutions in the field of Networking for designing, construction and installation for fiber Optic as well as Copper cable terrestrial networks.
Our certified Network specialists, splicers, field technicians and civil engineers can deliver high quality and innovative customer specific solutions from the BMH up to Telecom center.

Our terrestrial department offers the following services:

  • GIS Network Designing and Planning
  • Civil Engineering
  • Fiber Optic Networks Deployment and Troubleshooting (Tube Calibrations, FO Blowing, FO Splicing, FO OTDR Measurements)
  • Aerial Wire Services
  • Construction – Improvement of LAN & Wireless Networks
    CCTV & Telemetry Networks
  • On top of the above, we offer installation of precast Manholes of any specifications for Fiber Optic Cables as well as fabrication of Transition Joint Beds in situ.

Marine Logistics and Support

Dima Energy has effectively deployed expertise and knowledge in delivering on time bound marine and logistics support and this covers;

  • Supply of marine tankers and cargo lifting vessels
  • Vessel support activities for oil drilling installation
  • Chartering of PSV’s for offshore platforms
  • Specialized mooring and towing activities
  • Provision of transport and accommodation vessels for offshore personnel
  • Supply, installation and maintenance of marine navigational/communication equipment.

Geophysical and Geotechnical Engineering Services

Dima is a strong, reliable planning partner; our experts have decades of universal experience in the implementation of projects in the field of geotechnical and geophysical planning. We take a holistic and future-oriented approach to projects. This service includes;

  • Offshore and inshore geophysical and geotechnical survey
  • 3DVSP seismic surveys utilizing multi-array 3C sensors and fibre -optic DAS technology
  • Provision of personnel for drilling operations
  • Provision of structural design engineers
  • Provision of dredgers
  • Design services and fabrication

Plus, Sale of Equipment:

  • Land seismic equipment and nodes
  • Acoustic haling devices for offshore platform security
  • Port or offshore platform marine surveillance equipment
  • Sale and rental of EIVA survey software and survey systems
  • Design, manufacturing, integration of drilling rigs and drilling equipment, mud systems
  • Valves and pumps
  • Dredging equipment
  • Design and sale of high pressure / high flow well stimulation pumps
  • Design and sale of Mobile Power Generation systems (whether gas turbine or diesel) suitable for remote locations
  • Sale or rental of survey grade UAV for platform & facility inspections including flare stacks
  • Design, sale and repair of single and multiple-stage hydraulic cylinders for offshore platforms and land rig operations
  • All general fabrication, piping and electrical work, pressure vessels (ASME)