Piracy, war and security
The world does not get any safer and it is difficult not to transit across waters where coastal states are subject to internal conflict and where your vessels are not potentially exposed to collateral damage from attacks by warring factions or criminal gangs.
Piracy off Somalia may have receded but in other areas, such as West Africa, kidnappings of crew and cargo theft remains a constant threat. Civil war continues to rage across several middle-east countries in places like Syria and Yemen. North African countries like Libya are reeling from the so-called Arab Spring with the resulting huge surge in immigration and the latent threat from war like activities and terrorism. Elsewhere sanctions imposed mean that trading to a large part of the world is fraught with uncertainty and increased risk.