Within the spring inspection of the SnowSense in-situ monitorig stations, the early icebergs along the coast of Newfoundland, Canada had observed.
As matter of course the routinely processed Sentinel-1 datasets for the island of Newfoundland had been checked. And yes, the movement of the icebergs to the South could be tracked in the S1A IW data.
The southern / left one is only covered by the dataset of 25. April (due to image geometries) – the photo was taken on 24. April.