More than this, because there are lost days when you work offshore. You'll travel from the coast to your point of interest. You do not chart at night if you can avoid it. There is not point in using your instruments in previously well known areas so you are not charting all the seawork hours. Some days the weather will not allow you to deploy the instruments safely, and things can break also ruining the entire campaign.
I had my part of this also (in a local scale) and is not an easy task. When the climate is suboptimal you need to fight against your desire to throw up constantly; at the same time that manipulating very fragile and expensive material in an always moving and often slippery platform.
It sounds like a lot but really isn't when you look at where else the money is going, even just within the research community. For example, that is about one year's worth of pointless medical research (the final reports are of no use to anyone due to bad design, terse descriptions, etc):
