# Vessel Utilisation – Part 5: The analysis of results outside Mermaid

Introduction In the last part we looked at how we can use Mermaid outputs to perform a bespoke analysis and discussed the process of writing a script to extract additional information.  This example is reasonably simple, but the timestep by timestep nature of the results allows substantial detail to be considered. In this post we’ll[…]

# Mermaid and O&M

We often get asked about applying Mermaid to operations and maintenance and how Mermaid can be used alongside the calculation of power plan yield.  Here’s a short video which discusses some of the applications:

# Vessel Utilisation – Part 4: An overview of bespoke post processing

Introduction So far in this series we have prepared and run a number of simulations and considered the results in Mermaid, all with the aim of answering the question: “When should we take the trenching vessel on hire, relative to the installation vessel?” We saw in the last post that our base case offset (32 days)[…]

# Vessel Utilisation – Part 3: The analysis of results using Mermaid

Introduction Last time we finished the setup of the analysis by preparing the flow diagram.  We considered a number of options for modelling these tasks, ultimately selecting a clean, simple and easy to maintain approach.  We also performed a number of simulations. In this post we will take a look at the results we have[…]

# Vessel Utilisation – Part 2: The simulation of cable lay operations

Introduction Last time we outlined the analysis of cable installation operations for a hypothetical operation at WaveHub.  We looked at the map and the shelter characteristics of the vessels we intend to use and outlined the main objective of the analysis, which is: “When should we take the trenching vessel on hire, relative to the[…]

# Vessel Utilisation – Part 1: The analysis of on hire times

Introduction Marine operations often require multiple vessels which are assigned specific tasks to perform.  Often the tasks performed by the vessels are independent of each other (i.e. the vessels work alone) but are linked in such a way that one vessel is dependent on the other completing work.  In this series of posts we are[…]

# Analysing Wind Farm Foundation Installation – Part 7: Two Vessels – The Division of Labour

In the last post we arrived at a strategy which we like, this being: Start our operations sometime in March. Use two vessels, unfortunately we can get the two we’d like though, so we’re using a slight cheaper, slightly less capable vessel as our second. Modify the capable vessel so it can carry more foundation[…]

# Analysing Wind Farm Foundation Installation – Part 6: Work Faster – Two Vessels On Hire

As we’ve moved through this analysis process and applied Mermaid to the consideration of how we can baseline and improve our performance two main objectives have repeatedly arisen: Work entirely in the spring and summer to reduce winter downtime. Maximise the time spent performing offshore operations when favourable conditions occur by reducing the number of[…]

# Analysing Wind Farm Foundation Installation – Part 5: Reduce Transits to Improve Performance – Offshore Resupplies

In this post we’re going to look at bringing the foundations to the installation vessel at site.  It’s thought that, as with carrying more components, we can increase the working time by transiting less.  If another vessel (a barge and tugs) brings components to the main vessel the transit requirements are reduced, although it’s worth[…]

# Analysing Wind Farm Foundation Installation – Part 4: Improve Performance – Split Installation

In the last post in this series we identified that even with a larger carrying capacity, our work force was still unable to fully exploit the preferable summer weather and that all start options performed at least some work during the winter.  In this post we’re looking at splitting our installation process into two halves.[…]