Bespoke equipment, coded to design, for local solutions, as well as DNV 2.7-1 built frames.

If the standard products do not meet your needs, we will design a solution for you.

Bespoke Products


A customer operating an emergency shutdown system on their CALM buoy approached us. The existing hydraulic power unit (HPU) was unreliable, causing their system to trip.

Constellation Engineering was asked to troubleshoot the existing HPU and propose modification solutions. After analysing the problem, we identified a design flaw in the existing equipment, and designed and built a new product to offer reliable operation of their system.

Hydraulic Chemical Injection Skids

A customer needed a chemical injection skid to work in a confined area. They required the package to be mounted in a certified DNV 2.7-1 lifting frame.

Constellation Engineering was tasked with the full design and supply of the equipment to ensure regulatory and process compliance.

Pursnes QC/DC Emergency Spool Piece

Our customer’s single point mooring system failed and they required a DP-2 tanker to provide emergency offloading operations at their terminal. The DP-2 tanker had a bow loading system (BLS) with a 20-inch Pursnes quick connect (QC/DC) fitting.

Constellation Engineering designed and manufactured a specialist reducer spool piece, with integral floatation to connect the QC/DC to their existing OCIMF hose string.

Due to the emergency nature of the customer’s requirements, Constellation Engineering was able to propose a solution, design, manufacture and deliver within a very short time frame.

DNV 2.7-1 Lifting Frames

Constellation Engineering is an approved designer and manufacturer of DNV 2.7-1 lifting frames. Our factory has full welding approval.

Our design engineers are able to design lifting frames of various sizes.

We have a number of approved designs for speedy delivery.

System Modelling using 3D CAD, Orcaflex and mathematical modelling

Constellation Engineering is able to fully model a customer’s marine terminal and hose string using 3D CAD and Orcaflex software.

This enables us to visually model for customers’ various configurations, including over-size or under-size tanker connection, and handling issues. This supplements the calculations required for system design.

Simulation and modelling of a proposed system prevents later over-bending and stretching of hoses, identifies potential chafe-points, and identifies potential interference between ship-stern rudder and propeller.

Orcaflex analysis enables us to model the behaviour of hoses in a marine environment and is useful for root-cause analysis of failures, and determining compatibility between various manufacturer’s hoses.

Hoses must be adequately sized in accordance with the customer’s loading requirements. Considerable savings can be made by adjusting hose size to optimise flow rates. As fields become older and production rates decrease, the optimum hose size will change. Constellation Engineering offers flow rate analysis to determine the optimum system requirements.