Page 68: of Maritime Reporter Magazine (November 2013)

68 Maritime Reporter & Engineering News ? NOVEMBER 2013 Offshore Service Vessel TechnologyThe Drawing Board Eastern Shipbuilding Group , which has been extremely busy of late in the offshore sector, de- livered M/V HOS Red Rock (Hull 202) to Horn- beck Offshore Services, LLC. Hornbeck?s Þ rst vessel, the HOS Red Dawn (Hull 201), was de-livered on June 21, 2013 and is currently servic-ing offshore drilling operations in the U.S. Gulf of Mexico. Hornbeck?s third vessel the HOS Renais- sance (Hull 203) and is currently at Eastern com-pleting Þ nal out Þ tting, regulatory and DP-2 trials. Delivery of the HOS Renaissance is scheduled for November 2013. The HOSMAX 300 Offshore Support Vessels feature the following capacities: Total Fuel Oil Capacity 241,141 USG Fuel Oil Day-tanks 20,190 USG Drill Water/Ballast Capacity 562,822 USG Potable Water Capacity 57,494 USG Liquid Mud Capacity 20,846 bbls. 10 tanks Dry-bulk Mud 14,347 cuft. seven tanks Methanol Capacity 1,605 bbls. two tanks Clear Deck Area 10,585 sq. ft. HOS Red Rock is the second of four vessels des-ignated as the HOSMAX 300 series by Hornbeck Offshore and are Diesel-Electric powered, twin Z- drive propelled OSV?s measuring 292 x 64 x 24.5 ft. These high-tech vessels feature four Caterpillar 3516C 16-cylinder turbo-charged Tier III diesel generator engines each rated at 1,825 kW at 1,800 rpm. Main propulsion power is provided by two GE Energy furnished Hyundai 2,500 kW 690VAC electric motors driving two Schottel SRP 2020 FP Z-Drives with nozzles rated at 2,500 kW at 1,025 rpm each for a total of 6,704 Hp. Schottel also provides two STT 4 Þ xed pitch tunnel thrusters rated at 1,180 kW at 1,170 rpm, each with direct coupled Hyundai 690VAC elec- tric motors. GE Energy Power Conversions pro- vides the complete system integrated diesel elec-tric package, including the propulsion and thruster drives, motors, control systems, DP system, switchboards, motor control centers, automation and navigation/ communication electronics. These vessels are capable of a maximum speed of 14 knots with a cruising speed of 12 knots. The fully integrated bridge is arranged for increased visibili-ty and features the latest technology in navigation, communication equipment. The remaining six OSVs under contract are 302 x 64 x 26 ft. designated HOSMAX 310 Offshore Support Vessels. The total below-deck capacities of the HOSMAX 310 include 285,649 gals of die-sel fuel, 609,227 gals of drill/ballast water, 21,509 barrels of liquid mud, 14,347 cubic foot of dry-bulk mud, 2,212 barrels of methanol and 62,538 gals of potable water. Ulstein?s latest design contract for Vroon Off- shore Services pushes the total number of offshore ship designs sold from the Þ rm past the 100 mark. This milestone has been achieved in 14 years, with 74 of the contracts signed for the company?s X? BOW design, launched in 2005. In total 25 different ship owners have ordered Ulstein designs, with 16 different shipyards build- ing the vessels. Ulstein said 62 have been built at yards worldwide, while 38 have been built at Ulstein?s yard, Ulstein Verft, on the west coast of Norway. The latest contract on two PX121 PSVs (ship numbers 100 and 101) that was ordered by Vroon Offshore Services (Netherlands), will be con- structed at COSCO (Guangdong) shipyard in Chi-na. The vessels are destined for European waters. Although Ulstein?s latest designs were intro- duced in 1999, the company has a history of de-veloping ship designs that stretches back to the beginning of the 70s (its UT-designs, later sold out of the group, made an early impression). Ulstein contends that 2005 was the year that the global shipping market really ?woke up? to the X?BOW design.This X-Bow design, Þ rst seen on the AHTS Bourbon Orca, is designed to reduce movements and eliminates wave slamming and bow impact, stabilizing the work platform and improving com-fort on board. The lines of the hull create tangible performance beneÞ ts, with positive effects on fuel-ef Þ ciency, speed and motions, which extend the operational window, especially under poor weather conditions and in rough seas, Ulstein said. Test results show The offshore market continues to be a signi Þ cant driver for ma- rine innovation, as vessels and their operators are critical factors to ensure that offshore operations ? increasingly conducted in deeper, more hostile waters further from shore ? are conducted in a safe and efÞ cient manner. Here Maritime Reporter examines some notable recent designs, developments and deliveries. Innovative OSV Design from the ground up MR #11 (66-73).indd 68MR #11 (66-73).indd 6811/12/2013 10:37:43 AM11/12/2013 10:37:43 AM