At breakfast the morning after we left Oman, Captain Olav made an announcement that because of the piracy off the coast on Somalia, we would be sailing on an easterly arc to the Seychelles even though it was almost due south. In addition from Seychelles to Mombasa, Kenya we would sail a southerly arc even though the latter is almost due west of the former, again to avoid the areas where the pirates are known to be operating. Since the latter sail would take longer than sailing straight, we would speed up to shorten the trip to the Seychelles from four to three days, push up our stay in the Seychelles by a day, and lengthen our trip to Kenya from two to three days.
I found a course map showing the change.
Map Showing Altered Route to Avoid Pirates