How fast does it go? for estimating the speed for small outboard planing boats see planing speed boat chart. this chart should be used for general estimates only. joe carozzoni offered a suggestion – when builders list the engine (.e.g cid/hp) and propeller size/pitch – it’s not much help unless they give a. 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!. About the plans: i am not a naval architect, or an engineer, or even a draftsman. i am a forester by education, a furniture-maker by profession, and a boat-builder, sailor and racer by inclination. i have built a number of boats over the last 35 years or so: from the 8-foot hydroplane i built when i was fourteen, to a 21-foot sailboat built in the 1990s, and a bunch of tunnel and v-bottom.