[Renton777]

If you are looking for an engine that is compact and powerful, the H4 engine might be your best bet. This type of engine was originally developed by Porsche but has since been used in a variety of other applications as well. The flat-four or horizontally opposed layout allows for a lower center of gravity and more compact design which both help make this a great choice when space is limited. In this article, we will discuss what makes the H4 such a valuable option for different types of applications including cars, boats, motorcycles, and airplanes!

[caulinda87]

The flat-four or horizontally opposed layout allows for a lower center of gravity in a more compact design. The orientation also makes this engine great for motorcycles, cars, boats, and airplanes where space can be limited.

[Guybrush]

Subaru has been manufacturing H-4 engines since the 1960s with a long track record for reliability. Honda, Toyota, Nissan, and Nissan all have built extremely strong, reliable 4 cylinders for a long time. There are so many factors to consider when buying a car, that I4 vs. H4 is not that important. here

[rydiamage]

I made a video of my first outing and also an assembly video at first launch in Skinningrove, UK. more

[europazuz]

Every trip out in the Seapro has been a pleasure and I’ve had no issues with the performance. I think it’s best paired with a 6hp or 9.9 hp outboard. The 6hp I currently use with it is certainly fast enough for me. I’m keen to see how a 6hp 4 stroke would work with it so maybe a 4 stroke upgrade is on the cards for next year. I love the 2 stroke Johnson 6hp but the mixing of oil is a chore I can do without. [links]

[Strofcon]

This boat has a removable air deck floor which has plus and negative points. Great for if you manage to puncture it, maybe cannot repair it, and need to replace it. Not so great for when you need to clean the boat after a days fishing as you need to remove the floor to clean and dry underneath it. Not a major problem, I’m just lazy but still prefer this to the integrated air deck floors. [links]

[Tritonio]

The main benefit of having an air deck floor, less weight, can also be a drawback. Not having the weight of an aluminium floor in a boat this size can often cause the front of the boat to rise up and the rear to sit low in the water due having most of the weight at the back of the boat. This boat is no exception although this is easily sorted by putting some extra weight at the front end. I find 20KG of kit at the front end lessens this effect. This pic below shows an example of the front lifting. Even using the outboard trim didn’t help much. here

[imnichol]

Background: Accounting for and quantifying the associative effect of each animal could improve both welfare of animals and response to selection. Because of the limitation of REML, Gibbs Sampling could be an alternative technique to estimate the variance component of the associative effect. The objective of this study was to investigate the estimation accuracy of the variance component of associative effect by using simulation via Gibbs Sampling. The simulated data comprised five generations of pigs. The breeding animals of each generation were selected randomly. In the simulation, variations were introduced for the methods of assigning pens (random, mixed sib and full sib), the number of pigs per pen (5 or 10), the number of breeding animals per generation (162 or 324) and the correlation between genetic direct effect and genetic associative effect (-0.5, 0.1 or +0.5). Each set of simulation was run for 30 replications. more

[knightmb]

Results: Random assignment or mixed sib assignment resulted in bias of estimated variance components in only 3 of 24 combinations. Furthermore, these 3 cases occurred with 162 breeding animals. With full sib assignment, 9 out of 12 groups of estimates significantly deviated from the true parameter value. The Root Mean Square Errors obtained with the full sib assignment were higher than with the other two methods of pen assignment in most of the cases. The Root Mean Square Errors obtained with datasets with 324 breeding animals were notably smaller than the datasets from 162 breeding animals. Within each method of pen assignment, the relative bias of the associative effect was significantly smaller with group size 10 than with group size 5. [links]

[Stone Man]

Conclusion: Full sib assignment caused difficulties to estimate variance components in most of the cases, due to a lack of identifiability. With random and mixed assignment, most data structures yielded unbiased results but increasing the number of breeding animals or group size improves the estimation. Thus to get identifiable and unbiased estimates of the genetic associative effect, it is recommended to avoid close genetic relationship between animals within one pen and to use sufficient numbers of breeding animals and sufficient group sizes. [links]

[Traktion]

here

[CoinOfLuck]

The Classic line includes tenders with inflatable tubes and inflatable keels which reproduce the traditional V-shaped hull. The innovative walkable aluminium surface offers great sturdiness, as it makes the tender stable and resistant when at sea.

[sevyanfellow]

The Classic line includes tenders with inflatable tubes and inflatable keels which reproduce the traditional V-shaped hull. The innovative walkable aluminium surface offers great sturdiness, as it makes the tender stable and resistant when at sea.

[xenfasa]

The Classic line of tenders can be easily stowed on board. A perfect combination of functionality and safety, suitable for all boat owners. Additionally, their features as well as their high-quality materials make them the most durable ones in their category, even in the roughest conditions at sea.

[srf21c]

[links]