Newton marine the blog! it is with great pleasure that i would like to announce the launching of the latest edition for newton marine, newton marine the blog!. Instant access to 518 different plans – from small wooden boat plans to large sailboat plans – free boat plans. Frame patterns on keel and stem. stem pattern used to form keel and place stem. this is the real zephyr, a 16 foot stepped hydroplane! reproduced from the original offsets and plans by a.a.apel..