The ship, named "Amazon", exited the port of Samson on May 9, loaded with military vehicles and various weapons, according to pictures taken from the board.
The Turkish arms shipment comes after Erdogan announced his rejection of the military operation launched by the Libyan national army to liberate the capital Tripoli from the militias.
Turkish weapons are the most prominent sign of Turkish support for extremist militias in Tripoli.
Fayez al-Sarraj's interior minister, Fathi Pasha Agha, and the leader of the Muslim Brotherhood, Khalid al-Mushri, visited Turkey and visited an arms exhibition in early May.
In an interview with "Sky News Arabia" last Monday, Libyan National Army spokesman Major General Ahmad al-Massmari said the Turkish weapons and aircraft ("Drons") had reached the hands of the Tripoli militias.
"There is Turkish support for the militias, and Turkish drone aircraft have been used," he said.
He pointed out that "the use of technology needs a great time of preparation, training and processing, but the entry of aircraft in the course of 48 hours indicates that there are foreigners overseeing the management of these aircraft."