Total revenues from the Offshore Supply Business increased by 87% attributable primarily to a full three months of operation in 2010 of the UP Rubi, which started its employment with Petrobras under a long-term time charter in August 2009, and to the operation of the vessels UP Esmeralda and UP Safira. Both the UP Esmeralda and UP Safira are operating under long-term time charter with Petrobras after arriving in Brazil from the North Sea during the first quarter of 2010 at improved rates from those prevailing in the North Sea in the third quarter of 2009. The increase in revenues is also a result of an increase in revenues of our UP Topazio due to her operation in Brazil during the third quarter 2010 as opposed to a lower number of days in the third quarter 2009 when the vessel was repositioned from the North Sea. All of our six existing PSVs are now chartered to Petrobras on long-term employments at attractive rates for periods ranging between three to four years.
Ultrapetrol has continued constructing an additional six new PSVs that will be added to the fleet. The UP Turquoise, which we are currently building in China, is expected to be delivered on December 20, 2010, and has been chartered to Petrobras for a four year period, whilst UP Jasper, also being built in China, is expected to be delivered in the first quarter of 2011. The first of the four vessels under construction in India is now expected to be delivered in the first half of 2011.
The Company has continued to invest heavily in the expansion of its PSV fleet. We believe that the Brazilian market will grow substantially with the support of Petrobras' aggressive capital expenditure plans.
OceanThe Ocean segment generated adjusted EBITDA of $2.5 million in the third quarter of 2010, as compared to $13.6 million in the same period of 2009. For a reconciliation of adjusted EBITDA to segment operating profit, please refer to the tables at the end of this release.