The products tanker Chrystal Sky reported a series of explosions around the vessel late on Sunday afternoon.    The 73,976 dwt Chrystal Sky reported the incidents from a position 60 nautical miles south of Mokha in Yemen at 1650 UTC yesterday, according to maritime security firm Vanguard Tech.    The 2008-built vessel, operated by Singapore-headquartered Executive Ship Management and flying the flag of the Marshall Islands, was heading north on a voyage from Sikka, India to Barcelona.    One explosion was reported just 100 metres from the tanker’s starboard side but the vessel is not thought to have sustained any damage and continued her voyage.    Tensions in the region have escalated over recent days following a crackdown by Yemen’s recognised government on the Iran-backed Houthi rebels. The head of Yemen’s internationally recognised government has announced an all-out war and a plan to recapture all Houthi-held territory.    The statement was expected following attacks staged by the Houthis on Saudi Aramco oil terminals and facilities on the Red Sea.

This followed last month’s Houthi offensive in which the rebel group seized control of Yemen’s Red Sea coastline and, critically, the Bab Al Mandab Strait linking the Red Sea with the Gulf of Aden and the Indian Ocean.