NOTE: The output described in this article is for the first simulation run only.

The workshift accessibility output shows the number of accessible weather windows for each logistic unit when the logistics unit has a work schedule for the whole simulation run. By work schedule, we mean that the logistics unit has an active availability period and the workshift in that period.

Input variables:

  • Required/reference weather window length
  • Daily operation time (e.g. 7-19) (aka. work shift)
  • Access limitations from vessel database

For example, the following days the described weather has given:
  • Day 1: whole day wave height < 1.5 m
  • Day 2: whole day wave height < 1.5 m
  • Day 3: until 14:00 wave heigth < 1.5 m
  • Day 4: after 10:00 wave heigth < 1.5 m
  • Day 5: whole day wave height < 1.5 m
  • Day 6: between 09:00 - 17:00 wave heigth > 1.5 m
  • Day 7: whole day wave height < 1.5 m
This information is given from the weather documentation.

Additionally, the following information defined:
  • Minimal weather window: 4 hours
  • Shift time: 07:00 - 19:00
Due to this information is defined:
  • Day 1: 12 h accessible
  • Day 2: 12 h accessible
  • Day 3: 7 h accessible
  • Day 4: 9 h accessible
  • Day 5: 12 h accessible
  • Day 6: 4 h accessible
  • Day 7: 12 h accessible
Due to this information, an operation on day 6 is not possible.

Then can be calculated:
Day 1 + Day 2 + Day 3 + Day 4 + Day 5 + Day 7 = 6 Accessible days
6 days / 7 days = 0.8571 = 85.71 % Accessible days
For the same time period and same vessel, the accessible days in the general and work shift accessibility is the same. Only the accessible hours per day are different because different time periods were analysed.

An example file is found on the bottom of this article.

Description of the outputs:

CellDescription
Column ADisplays the wind farm name (if no name is provided, "default" is used as standard). 
Column BDisplays the vessel name and ID (the ID is found in the URL when editing the vessel).
Column CDisplays either the number of accessible days (in the top rows), or the date and time when the vessel requires a weather window.
Column DDisplays the hours of work shift weather window required (used with column C).