A total of 50 projects worth Rs 3,581 crore are being implemented under the government's key Sagarmala initiative, Parliament was informed. The ministry has approved financial assistance of Rs 1,532 crore for these 50 projects, against which Rs 1,143 crore have been released, Union Minister of Ports, Shipping and Waterways Sarbananda Sonowal said in a written reply to Lok Sabha.