An interesting correlation between displacement, speed and KW input for your boat: at 3 knots, KW input is 100 watts per ton of displacement; at 4 knots, 200 watts per ton; at 4.5 knots, 300 watts per ton; at 5 knots, 500 watts per ton. My boat is half the displacement of yours on the same waterline length so I think I can extrapolate from this data that the power requirements will be the same per ton of displacement. Thanks. Steve S.
--- In electricboats@yahoogroups.com, "Eric" <ewdysar@...> wrote:
>
> Last weekend I realized that it had been about 2 years since my last performance test, and I wondered if anything had changed over time. I was at the marina on Easter morning and the conditions appeared to be ideal for another performance test. I ran through the same process listed below in about 100 minutes, covering a little over 7nm in total.
>
> Here's this weeks results:
> 497W = 3.1kts
> 1000W = 4.0kts
> 1500W = 4.5kts
> 2500W = 5.2kts
> 3975W = 5.7kts
> 5000W = 5.9kts
>
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (19) |
No comments:
Post a Comment