The base issue includes the sale of a 2.5% equity stake, equivalent to 65,77,020 shares, with an additional 2.5% available as a green shoe option. Cochin Shipyard shares saw a 3% jump on Tuesday, closing at Rs 1,673, which is Rs 48.60 higher than Monday's closing price. However, the floor price for an upcoming sale of shares has been set at Rs 1,539.16, an 8% discount to Tuesday's close.