The V1s accompanied the High Seas Fleet even though their design attracts sustained criticism. One interpretation is that they were the boats Germany could most readily sacrifice if a torpedo attack was needed to let the main fleet escape. Earlier S138 boats remained on other duties. Those included Baltic operations and North Sea work against the Harwich Force and Channel Barrage.
Notable Point · 1:15:30-1:17:38
Why the V1s accompanied the High Seas Fleet
One explanation for taking the V1s to Jutland is that Germany could risk losing them to cover a withdrawal, while older boats served elsewhere.