The company said the notes are also convertible into shares of BW LPG.
They mature in September 2019 and will carry a fixed rate of interest between 1.5% and 2%.
The owner has the option to increase the issue to a maximum of $250m during pricing.
Proceeds are earmarked for general corporate use.
The final terms should be announced later on Wednesday. There are no plans to list the issue.
ABG
