These are very dangerous waters:

On Tuesday, pirates boarded the Navios oil tanker Nave Constellation at a position about 75 nm south of Bonny, Nigeria and abducted 19 out of 26 crewmembers on board. It is the latest - and among the most severe - in a string of kidnapping incidents in the region this year.

In a statement, Navios said that the abductees include 18 Indian nationals and one Turkish citizen. The remaining seven seafarers on board navigated the vessel to safety. No pollution or vessel damage was reported.

According to maritime security consultancy Dryad Global, the attack occurred in a particularly dangerous hotspot for maritime piracy - the waters south of the Niger River Delta near the southeastern boundary of the Nigerian exclusive economic zone (EEZ). The position of the hijacking is about 25 nm away from the FPSO for Total's Egina offshore oil field.