The son, Ahmet Burak Erdogan, is the owner of the MB Shipping company, which holds two cargo vessels. One of them, Safran-1, has sailed between Turkish and Israeli ports several times, transferring goods back and forth.
The ship, which is 95 meters (312 feet) long, last docked at the Ashdod Port on January 12 – about three months before the end of the crisis between the countries.
An assistant to the chairman of the Republican People's Party (CHP), Erdogan's main opposition in the Grand National Assembly, slammed the Turkish prime minister over his "hypocrisy" during a press conference in Ankara.
Fellow opposition members directed a series of questions at Erdogan: "Has your son been exempted from the trade embargo against Israel? Is it ethical? What share of the volume of trade with Israel did the ship owned by your son take?"
During the crisis between Israel and Turkey, trade ties between the two countries thrived, reaching an all-time high of $4 billion – a 30% increase.