This kind of makes sense -- particularly if the offshore wind turbines are very far offshore. Few people are aware of it, but at large scale, hydrogen pipelines can transmit more energy with lower energy cost per mile than electricity. As a side benefit, the pipeline provides built-in storage as well as transport.

I'm not sure it's optimal to distribute electrolysis capacity to the level of individual turbines, however. The advantages of pipeline transport only kick in at large scale. As. in hundreds of gigawatt-miles. At lower power levels and shorter distances, underwater DC electrical transmission should more cost-effective. Also lower maintenance. It might make more sense to collect electrical power from group of turbines at hydrogen production hubs, and connect the hubs via hydrogen pipelines to shore.