
Venezuela's state oil company, PDVSA, has begun using tankers that sail undetected by radar to deliver oil to Cuba, as demand for electricity generated by oil-fired power plants soars during the sweltering summers of President Nicolas Maduro's closest political ally.
The shift comes as the fleet of state-owned ships that traditionally served the route has shrunk due to lack of maintenance, according to documents and ship monitoring cited in a Reuters article. Many of Venezuela's and Cuba's tanker fleets face U.S. sanctions, thereby limiting their travel capabilities.