Eye On Design News

In earlier columns, I have discussed various approaches and issues with Hybrid Propulsion.I have now had the pleasure of a number of years of experience with the design, operation, upgrade, modification, and maintenance of ship (and car) hybrid propulsion systems and may be able to make a claim of gradually becoming a little less confused.It is still not easy, but at the same time, I am starting to see a few shortcuts that make it less likely that a beautiful vision of marine efficiency ends up being beached somewhere.In essence, they are variants of the KISS (Keep It Simple Stupid) principle.

My brother and I had a discussion about methanol where we concluded that methanol is a promising sustainable liquid fuel for transportation devices when batteries cannot do the job. While Methanol is initially not carbon zero, as long as we focus on developing zero carbon electrical energy, eventually we can produce zero carbon green methanol. Once there is plentiful green methanol, existing methanol vehicles will automatically become zero carbon transportation.The core argument…

Predictability is the aim of every human, company, or society.Humanity simply strives to increase its level of predictability whether as a person, or as a group of people. When humans attain a certain level of predictability, their hope for the future goes up and their level of anxiety goes down.Oddly, conservatives and progressives both strive for predictability, they just do it in different ways. A conservative will say: If nothing changes, then my predictability for the future will go up.

While Greg Trauthwein never assigns me column subjects, each time the Great Ships issue comes around I go with the theme. However, I try to take a view askew on that subject and have found that these are the rare columns where I am criticized for my views. Greg must enjoy that, and this year he asked me to write a column on the worst ship designs. That was the entire assignment, and it was unclear if he asked me to discuss the worst ship designs for 2023, or in the history of ship design.

The physicist Max Planck (actually born as Marx Planck) is best known for the development of his universal constant that defines physics at the most basic level. It is an important number, and today it even defines the kilogram and therefore most engineering units. Regardless, in my daily life I have little use for it.Max Planks is less known for his Principle, which, to me, is much more useful and I encounter it almost on a daily basis. Max Planck provided this Principle in his Scientific Autobiography (and Other Papers…

In November 2020 I wrote a column in MREN that discussed the right of people to engage in crazy marine ventures. The example I used in that column was an attempt to row from South America to Antarctica. In it I also made note of the inherent unseaworthiness of single-handed ocean racing and noted that such foolishness often resulted in the public spending lots of money providing rescue services.The Ocean Gate Expedition Titan venture has now managed to set an entirely new standard…

This is going to be about whales, but it will actually be an engineering discussion rather than a nature discussion. Let’s start with an easy truth. Whale deaths due to offshore wind activities is utter nonsense. It has no basis in fact, and is a total fabrication by truly malicious characters.There, now let’s get into more interesting stuff. Whale deaths caused by humans is a complex issue that will never be solved completely, but, with careful adjustments, can be reduced. There is a possibility that occasionally there are whale COVID style epidemics that cause unusual levels of mortality…

When Greg Trauthwein offered me a column in Maritime Reporter & Engineering News, I received little direction with regard to subjects. I have not yet tested his boundaries of my subjects, and maybe, some day, I will try to slip in a column on the role of nautical fiction in the development of modern literature.So far, I have tried to stick with engineering subjects, although recently I may have pushed the boundaries with discussions on decision making, esthetics and OODA loops.It…

Naval Architects can predict many things with great certainty. But the sea is an unpredictable task master and there are still a number of areas where it is difficult to get a technical handle on the problem.High speed planing boat stability is one of those areas.Planing hull design is incredibly complicated and dynamic behavior is actually more difficult to predict than the dynamic behavior of airplanes. (Let me say it again: Aerospace engineering (I am one) is sandlot compared to Naval Architecture).Meanwhile thousands…

The use of certain technologies is rarely a stand alone decision. The switch from sail to steam did not happen overnight and they actually coexisted for over a century, where, based on available technologies, in certain applications steam was more attractive and in other applications sail was more attractive.The eventual dominance of screw propellers over paddle wheels was not even driven by technological considerations, but rather by a tug of war between a paddlewheel propelled vessel and a screw propelled vessel.

For the future of the industry, hire interns, both college and high schoolers. And pay them: none of that silly privileged unpaid intern crap that occurs in non-maritime industries.I generally wait until I receive the printed issue to read Maritime Reporter and Engineering News, and when I read the August edition, I was both delighted and frustrated, mostly because of the two articles on shipbuilding workforce development.There is so much STEM wheel spinning and to see reports…

While it is starting to look like some clever wind/power sail technologies are starting to appear, too often I have looked at the cargo cranes of geared bulkers and wondered if it makes sense to rig some sort of sail on them.I think the fancier approaches fight the “build a little, test a little, learn a lot” engineering maxim in new technology development, and maybe doing more simple stuff may be a better way to achieve lasting results quicker.A recent conversation with a sustainable propulsion advocate compelled me to run a few numbers.I found a bulker with a GA for a 2010 era 25…

Last year I provided a list of my favorite historical ships as my contribution to the Great Ships issue. Even though I received some pushback on the list, I see no need to amend it.I created that list to avoid having to judge today’s Great Ships, but the second time around I suppose I cannot evade my mission and should focus on present day vessels, and there is a lot of interesting stuff being produced in the U.S. and globally.But behind every Great Ship there are a lot of great people that stood at her cradle…

As naval architects and marine engineers we are familiar with the design spiral. While design is not truly a spiral, we use the concept to remind ourselves that all pieces of a ship design interact. The design spiral is not a standard figure and can be simplistic or overcomplicated.A Google search image summary provides dozens of interpretations, all investigating different variables, with the only commonality that all spirals start with the “mission” variable.Figure 1 is an old…

My brother, who is the executive editor of my favorite boating magazine (Soundings), and I occasionally send strange tidbits to each other by email. For some reason he sent me an email about the 17th Century ship Vasa and focused on one of the causes of the vessel’s failure to float properly.This is the Wikipedia paragraph he focused on:"The use of different measuring systems on either side of the vessel caused its mass to be distributed asymmetrically, heavier to port. During construction both Swedish feet and Amsterdam feet were in use by different teams.

Dennis Bryant provided a link to a story about the USCG Cutter Bear in his March 18, 2020 newsletter. It is a great story about a great ship with a great Captain (Michael Healy) and a great crew. It shows that the right combination of ship and crew can perform miracles.This one ship, its Captain (and his wife who often shipped with him), and its crew did so many things so well that it has become the stuff of legends. I will not further discuss these adventures; some can be found in the article and the rest can be easily Googled.