1. All of the plaintiffs' claims are dismissed.

2. The costs of lawsuit are assessed against the plaintiffs.

. The plaintiff B is an individual entrepreneur who is engaged in the electricity vessel business under the trade name of "G" and "H", and the defendant is a corporation that is engaged in the shipbuilding business.

B. On April 1, 2009, the Defendant and the I Co., Ltd. contracted the construction contract with the I Co., Ltd. (hereinafter “I”) with the content of receiving the construction cost per ton from the I Co., Ltd. (hereinafter “I”) as a unit price for vessel residence and engine licensing work (D/H house, F/Cing).

C. 1) On May 20, 209, Plaintiff A and the Defendant entered into an agreement between Plaintiff A and the Defendant on the Posical work (the work of transmitting electric wires) and the Posical work (the work of connecting electric wires with equipment) from the Defendant on May 20, 209 under a ton unit contract as listed below, and up to October 2013, the Posical work/H (unit: 1,000 won/metric)’s quantity classification of the Posical work and the Posical work’s connected work’s Ma 1.155 Of the equipment Poste 1.1.155, small 0.539 CABL 0.143 GHGGGG 02 * 20.70 Ma539, May 30, 2013, the Defendant concluded that Plaintiff BY 1 and the Defendant’s remaining Posical work under the CA 50.75 CY Y25.385.

Accordingly, on November 1, 2013, G operated by the Plaintiff B was subcontracted with a unit price contract for a ton unit work from the Defendant during the installation of electric supplies and work until October 5, 2014.

3. On October 6, 2014, the Plaintiff C, Plaintiff B, and the Defendant accepted the remainder work of Posting and line work, A/S work, incidental work, and follow-up management, etc. among the installation of electric goods in accordance with the above subcontract between G operated by Plaintiff B and the Defendant.