Re: something more about new hullshapes. ( A add on on Xbows etc. )

[giorgio zuppin]

Hello everybody, here I am again.
First of all I want to thank all the wiewers, hoping they have found some interest in the topic.
I am still searching on the web some common sources of the so called ‘wave piercing’ various designs; what is not so clear, for example, is if the bow design is adopted for fuel-saving or for better seafaring or a combination of reasons plus a bit of novelty-like.
Does’nt help the various types of ships involved: offshore service, merchant, SAR, OPV etc.
Has a sort of rule of thumb emerged in these years for this choice?

Just to spice-up the topic, here is maybe the most controversial wave-piercing design now under commissionig:

It will deserve a discussion a part, considering they have also adpted the old thumblehome design (for sthealtiness reasons) just like the old beautiful Brooklin class cruisers of the Hispano-American War.
Further question: I’m in trouble drawing bulbs, because I’m not perfectly aware of the physycs involved: could anyone suggest me some technical source to consult?
Many thanks.
Jurgen.