Kushalnagar, Nov. 14 (AG&VNS)- A Gujarat-based couple drowned after the speedboat in which they were travelling capsized at Harangi backwaters in Kushalnagar yesterday evening. Their two children escaped unhurt. The deceased have been identified as Dharmesh (50), an architect and his wife Nimmi (48), a teacher, both residents of Surat. Their children, Avanshi, 24 and.