Had a vessel where their VSAT system kept failing at sea and presented with all sorts of AZ, EL dome errors so last week I booked a crane and swapped out the dome. Worked a treat no more errors until they went to sea again. So today I went back aboard and buzzed out the cable from the antenna control unit which was perfectly ok and decided to swap out the antenna control unit. To be 100% sure I volunteered to go out to see even though it was extremely rough out and the sea was breaking over the Peterhead breakwaters. To my delight after the vessel being thrown about for an hour the VSAT never skipped a beat and the crew were happy with their internet. Posting a picture although it doesn't look too rough in picture but I can assure you it was. I was holding on whilst watching the stats of the VSAT on my laptop.