Study on a new electric propulsion ship with Tandem typed-POD propulsors

从推进性能和船舶操纵性的角度出发，对采用串联式吊舱推进器的电力推进船进行了研究。(1)以日本第一艘内河电力推进船“千船”为基础，设计了一种串联式吊舱推进器的新型船舶，并进行了模型制造。(2)利用该模型在广岛大学的拖曳水池中进行了阻力和自推进试验。结果表明，改进后的吊舱推进器推进性能提高了2-3%。(3)船体的中艉鳍必须缩短，以适应串联式POD推进器的船舶。由于这种影响，我们发现，航向保持能力降低相比，原来的森绍在坦克试验。(4)为解决这一问题，提出了一种新型双艉鳍纵列船型。我们证实这种新型船是有前途的。

An electric propulsion ship with Tandem typed POD propulsors was investigated in view of the propulsive performance and the ship maneuverability.(1) Based on SENSHO which is the first inland vessel with electric propulsion system in Japan, a new ship with Tandem typed POD propulsors was designed and its model was manufactured.(2) Using the model, resistance and self-propulsive tests were carried out in Towing Tank, Hiroshima University. As a results, we found that the propulsive performance was improved about 2-3% by changing the Tandem typed POD propulsors.(3) Center skegs of the hull have to be shortening for the ship with Tandem typed POD propulsors. Due to the effect, we found that the course-keeping ability was reduced in comparison with original SENSHO in the tank test.(4) To settle this problem, a new Tandem typed ship with twin side skegs was proposed. We confirmed that the new type ship is promising.