Hello all, Firstly, would you know the history of Nordforsk (1987) - Seakeeping criteria? I believe it is used only for large ships, would you...
Would anyone know more about the history and background of Nordforsk (1987) - Seakeeping Criteria? And its use nowadays and applicability to...
Hi. The maximum rated power output of this generator set is 99ekW (but the question is generic to any size) It's the client who's asked this...
It would be for a 15m workboat with electric twin thrusters (no propeller shaft arrangement). To me placing the generator transversely sounds...
Could you think of any negative points or cons of placing a 100ekW main generator set placed transversely instead of longitudinally?
To my surprise, I am learning that in medium and large ships Skegs and Rudders are typically flooded with seawater (or even freshwater) instead of...
They give the same result for 8 knots (NPL Bailey and Holtrop)! I am really impressed with the outcome.
Here are some Resistance and Power curves for different methods I got using Maxsurf. Holtrop and Fung give similar results. I am planning to use...
Thank you both. I'll do some further work and calculations and post it here.
What is the process one should make at the preliminary design phase to estimate fuel consumption at service speed with the aim to determine fuel...
Thanks for pointing this out. Still the beam could be wider and the length shorter to bring down the L/B ratio. The idea behind making it slender...
How do you set the DWL ? At what loading condition, 50% fuel ? I was asking myself about the transom immersion. How much is reasonable?
Hi folks, another question regarding choosing an adequate hull shape. I have set the main dimensions as 15m length by 3.4m beam. The power boat...
It would be easier to visualise if you show the three boats in plan view together. For some reason the one in the middle looks the best for me....
Below $5000 ideally. I was meaning indeed Orca3D Marine CFD https://orca3d.com/pages/orca-marine-cfd Thank you Ad Hoc for the Bailey NPL series,...
kN = kilo Newtons (a force) I am after the hull resistance (in kN) in calm water at different speeds up to 12 knots (1kn, 2kn, 3kn,...,12kn), in...
I am looking to obtain accurate hull resistance curves (kN vs. boat speed in knots) for a semi displacement hull of 12m (39ft) and speeds up to 12...
Thank you for your explanation Ad Hoc, very interesting and easy to grasp.
Could you expand on that a bit more please?
Get your point, totally. But the STIX must be at least an indicator up to certain point. For info, in Larsson's Yacht design book, there's a...
