Really, hmm so you think the need to send boats out to the turbines to service them on a regular basis will have [an insignificant] effect ?
Yes. Moreover, any effect it did have would be worth it compared to the benefit of avoiding coal.
To make an analogy, coal emits more radiation per megawatt during its normal operation than nuclear power plants have released cumulatively, even including the worst disasters. Similarly, fossil fuel power (coal, oil, and natural gas) pollutes more in its normal operation than wind power would even during the biggest disaster possible.