Four years ago, Dubai-based Tristar Tankers lost two of its seafarers to suicide in the space of two months.

Shaken by the losses, the company's senior management decided that an immediate deep dive into the issues of seafarer mental health and suicide was needed.

"This was a very personal issue for us. We thought that we should not let these two deaths go in vain," Tristar Group founder and chief executive Eugene Mayne said at a recent safety conference focused on seafarer well-being that was organised by the company.