I got the motors installed with the prop shafts and props. My three cell battery pack was used to get the motors turning to check the rotation. Every thing was smooth. The batteries were laid in place to check out the weight and I was amazed to see that it weighed a little over 13 pounds, maybe a little more when it's ready to go. At this weight it will be bobbing around on the surface like a toy. The CG was also a little further back than I wanted. I'll have to ballast it with four to five pounds of lead around the keel. Dan.