Port Blair, Jan. 25: As part of the Republic Day celebrations in Andaman & Nicobar Islands, ships/vessels of Indian Navy, Indian Cost Guard, and DSS will be illuminated tomorrow (Jan.26) and on Jan.29 (Beating Retreat) from 1800 hrs to 2200 hrs at anchorage off the Marine Flag Post sea front. At 1800 hrs on both days, the ships would fire colourful flares and switch on the contour illumination lights.