/home/cms_data/dfault/photos/stories/id/1/5/7115/s_ERRORJoseph Rossman and Logan Tonsgard prepare to launch a battery-operated submarine at the Small Boat Harbor Sunday. The device also was equipped with a camera, the youths said. They said they mostly found mussels. The football-sized device can be seen near the water surface at lower right in photo. Tom Morphet photo.