Mainstream tankers risk being caught in shadow fleet STS crack down, says Intertanko 11 July 2023 Group of independent tanker owners says standard operating procedures could turn ships dark during STS operations.Author: Capt. Johnhttps://www.tradewindsnews.com/tankers/mainstream-tankers-risk-being-caught-in-shadow-fleet-sts-crack-down-says-intertanko/2-1-1484175