О безопасности плавания. Брочинг. Как избежать неприятностей на воде
Октябрь на нашем Северо-Западе, как правило, характеризуется и похолоданием, и осенними штормами. Короткий световой день вкупе с неустойчивой погодой способствуют тому, что для многих выезд на рыбалку в этот период проходит в ситуации, которую можно охарактеризовать как стрессовую – когда и хочется, и колется, но, как говорится, охота пуще неволи. К тому же не всегда есть время пробежаться по сайтам всех погодных информеров, чтобы провести более детальный анализ погоды на ближайшие дни и принять решение, за которое потом не будешь себя корить.
Но любой информер – это не более чем прогноз, всего лишь предположение с определённой долей вероятности. Поэтому возможность того, что что-то «пойдёт не так», стоит иметь в виду и быть готовым к тому, что погода может преподнести не очень приятный сюрприз.
К разговору о безопасности плавания и о таком неприятном явлении как брочинг меня подтолкнули два события. А точнее – описание этих событий очевидцами. Из их рассказов следовало, что именно этот самый брочинг и стал причиной переворота лодок и купания экипажа. По счастливой случайности помощь подоспела вовремя и народ отделался только потерей ящиков с рыболовными снастями и кое-какой мелочевки, а также насморком.
Если набрать слово «БРОЧИНГ» в поисковике, то выяснится, что оно тесно связано либо со словом «ЯХТА», либо со словом «БАР». Яхта – это не для нас, так как у нас моторы, а вот бар иногда сопутствует, особенно в местах, где прибойный ветер сталкивается с водой из устьев рек. Там, конечно, умение преодолевать брочинг ещё более актуально. Но для наших небольших лодок ситуация осложняется тем, что даже метровая попутная волна может выкинуть совсем неприятный «фортель», причём и у берега, и в относительном отдалении от него.
Что же происходит или может произойти с судном, когда оно движется по ветру и по волне? В чём кроется опасность? И можно ли этой опасности избежать?
Несколько слов о том, что влияет на эти процессы:
- волновая картина на водоёме;
- основные размерения судна и форма его обводов;
- скорость движения судна и запас мощности его двигателей;
- мореходные качества судна;
- навыки шкипера в управлении судном.
Итак, БРОЧИНГ… для СУДНА ИЗ ПВХ
Это явление возникает, когда судно сходит с гребня волны «к подошве» и при этом совершает поворот (рис. 1). Но поворот не любой, а превышающий определённый градус. Для каждого корпуса, для каждых обводов это окажется свой угол, который будет критическим или пороговым. До поворота на этот угол всё относительно безопасно, а вот дальше уже возможны варианты (рис. 2). Причём с лавинообразным ростом вероятности оверкиля.
Поговорим о деталях и физике этого процесса. Судно, выбрав курс по волне, в зависимости от волновой картины, а также собственных размерений и скорости, может по-разному их преодолевать.
Пример 1. Скорость лодки и скорость движения волны совпадают, и судно движется прямолинейно, не обгоняя гребень (рис. 3). Такое движение самое безопасное, и такой темп целесообразно сохранить до окончания плавания на акватории с волнением. Возможные изменения курса производятся плавно, заранее, не пересекая гребень и не подходя близко к гребню догоняющему (рис. 4). Выполнить эти требования сложно, но реально, даже если энерговооружённость судна относительно небольшая.
Пример 2. Скорость лодки уступает скорости движения волн. Волны периодически настигают судно, и оно начинает заметно ускоряться, оказываясь под гребнем волны. Это движение – своеобразный сёрфинг. И именно на этом участке может проявиться всё коварство стихии (рис. 1).
Пока судно идёт строго по направлению движения волны, две силы (одна – из-за воздействия упора винта, а вторая – скатывающая с гребня) просто складываются, периодически то ускоряя, то замедляя движение лодки. Судно с обоих бортов обтекает ламинарный поток (рис. 5А).
Но стоит только при сходе с гребня начать поворот – и тут надо быть начеку. Прилагаемые к корпусу судна силы начинают взаимодействовать так, что оно «съезжает» с гребня уже под углом, как бы боком (рис. 5В). Это не критично, пока лодка в носовой части продолжает омываться ламинарными потоками.
При увеличении угла отклонения у одного из бортов ламинарное течение превращается в турбулентное, что приводит к резкому падению давления на этот борт. При этом сразу же появляется разворачивающая сила, приложенная к носу судна (рис. 5С). И, что самое неприятное, она нарастает очень быстро и неумолимо. Времени для контрмер остаётся очень мало: газ «в полную тапку» и штурвал в противоположную развороту сторону, экипаж откренивает лодку со стороны наветренного борта. После выполнения таких действий появляется некоторый шанс выйти из этой истории без потерь. Иначе произойдёт неминуемый оверкиль со всеми вытекающими из этого последствиями…
Пример 3. Скорость судна превосходит скорость движения волн. Судно периодически проходит гребни волн, но при этом необходимо стараться курс держать строго перпендикулярно гребню волны, не допуская развития событий по описанному выше сценарию. Но для этого примера, как правило, характерна уже более серьёзная энерговооружённость – и шанс быстро скорректировать изменение курса, даже находясь под гребнем, растёт пропорционально мощности двигателя.
Описанные выше сценарии вполне вероятны как у берега, так и на довольно большом отдалении от него. Возникновение подобной проблемы наиболее неожиданно в местах, где есть отмели либо резкие перепады глубин. Там обычно относительно пологая волна довольно быстро приобретает критическую крутизну с опрокидывающимся гребнем. А вот здесь уже, что называется, ухо надо держать востро.
Итак, проблема описана, возможные пути по её недопущению отмечены. Осталось пожелать, чтобы коллеги, понимая всю сложность управления судном в волну, постарались не допустить создания подобных условий и были готовы, если потребуется, с честью выйти из любой, даже самой сложной ситуации.
Видеоиллюстрацию этих процессов можно увидеть здесь:
Семь футов под килем, уважаемые коллеги!
Владимир Колгин
Can I simply say what a relief to uncover somebody that actually knows what they are discussing on the internet.
You actually understand how to bring an issue to
light and make it important. More people need to check this out and understand this side of the story.
It’s surprising you are not more popular given that you surely possess the
gift.
Asking questions are truly pleasant thing if you are not understanding something fully, except this piece of writing gives nice understanding yet.
Major thanks for the blog post.
I do believe all the ideas you have introduced to your post.They’re really convincing and can definitely work.Still, the posts are very short for newbies.Could you please extend them a little from next time?Thank you for the post.
does hydroxychloroquine cause hair loss hydroxychloroquine update today
It’s hard to come by experienced people in this particular subject, however,you seem like you know what you’re talking about! Thanks
The left-hand doesn’t should play very a lot in the verses because the melody dominates a lot of the music.
Hi i am kavin, its my first occasion to commentinganywhere, when i read this post i thought i could also create comment due to this good paragraph.
แถมฟรีสูตร เเถมกลุ่มนำเซียน♥ เว็บดี เว็บตรง มั่นคง ปลอดภัย เล่นง่าย จ่ายชัวs์♥ ฝๅก-ถoน ไม่มีขั้นต่ำตลoด 24 ชม♥ บoล หวย คๅสิโu เกมส์ มวe ไก่ชน บาคาร่า สล็อต
I could not refrain from commenting. Exceptionallywell written!my blog post: Vital Max XL
A motivating discussion is definitely worth comment. I think that you ought to write more about this subject, it might not be a taboo subject but typically folks don’t speak about such issues. To the next! Cheers!!
I wanted to thank you for this good read!! I definitely loved every bit of it. I have you bookmarked to look at new stuff you postÖ
I really liked your article.Really thank you! Keep writing.Loading…
Most of America? You mean California and a few smaller areas?As I recall the map of «The United States of America» showed most states and electorals went to President Trump.
532600 472686Its difficult to get knowledgeable folks on this topic, but the truth is be understood as what happens youre preaching about! Thanks 43466
My brother recommended I might like this blog. He was once totallyright. This publish actually made my day. You cann’tbelieve just how a lot time I had spent for this info!Thanks!
Greetings! Very helpful advice within this post! It’s the little changes which will make the most significant changes. Thanks a lot for sharing!
F*ckin’ amazing things here. I am very happy to peer your post. Thank you so much and i’m having a look forward to contact you. Will you kindly drop me a e-mail?
Aw, this was a really nice post. Spending some time and actual effort to make a goodarticle
Pretty! This was an extremely wonderful post. Thanks for supplyingthis info.
tadalafil online canadian pharmacy – tadalafil generic name tadalafil canadian pharmacy
stromectol usa generic stromectol – ivermectin brand name
essay quizlet do my homework app doctoral dissertation
Aw, this was an exceptionally good post. Taking a few minutes and actual effort to create a top notch articleÖ but what can I sayÖ I hesitate a lot and never manage to get anything done.
Thank you for another informative blog. Where else may just I am getting that type of info written in such a perfect manner?I have a mission that I’m simply now running on,and I’ve been at the glance out for such information.
Terrific post however , I was wondering if you could write a litte more on this subject?I’d be very grateful if you could elaborate a little bit further.Cheers!my blog post — Frost Air Cooler Reviews
whoah this blog is excellent i really like studying your posts. Stay up the great work! You understand, lots of individuals are hunting round for this information, you can aid them greatly.
I want to to thank you for this good read!! I absolutely loved every little bit of it. I’ve got you book marked to look at new stuff you postÖ
I blog frequently and I genuinely thank you for your content. The article has truly peaked my interest. I am going to take a note of your blog and keep checking for new details about once per week. I subscribed to your Feed as well.
Yes! Finally something about 100 pure skin care.
luke combs six feet apart cheyenne crossing apartments
I really like what you guys tend to be up too. This kind of clever work and exposure! Keep up the great works guys I’ve added you guys to my blogroll.
I just like the valuable information you supply to your articles. I will bookmark your blog and take a look at once more here regularly. I am fairly certain I will learn a lot of new stuff right right here! Best of luck for the next!
בחורה עם כוס שעיר מקבלת זין עמוק על הספה בביתנערות ליווי בתל אביב
I¡¦m now not certain where you are getting your information, however good topic. I needs to spend some time finding out much more or working out more. Thanks for fantastic information I used to be on the lookout for this info for my mission.
I want to to thank you for this very good read!! I absolutely enjoyed every little bit of it. I’ve got you saved as a favorite to look at new stuff you postÖ
chloroquine purchase generic name for plaquenil
I do not even know how I ended up here, but I thought this post was great. I don’t know who you are but certainly you’re going to a famous blogger if you are not already Cheers!
Hi there, just wanted to say, I loved this article. It was practical. Keep on posting!
Hey! Do you know if they make any plugins to assist with Search Engine Optimization? I’m trying to get myblog to rank for some targeted keywords but I’m not seeing very good gains.If you know of any please share. Cheers!
Nice post. I was checking continuously this blog and I’m impressed!Extremely helpful info specially the last part I care for such info much.I was seeking this particular information for a very long time.Thank you and best of luck.
Hey There. I found your blog using msn. This is a very well written article.I will make sure to bookmark it and return to read more ofyour useful info. Thanks for the post. I will certainly comeback.
Wow, great blog. Fantastic.
lloyds pharmacy online canadian pharcharmy online fda approved
Looking forward to reading more. Great post.Really thank you!
A round of applause for your blog.Really thank you! Much obliged.
I am so grateful for your blog.Really looking forward to read more. Cool.
Very informative blog post.Really looking forward to read more. Much obliged.
I really like and appreciate your article post.Really thank you! Awesome.
Oh my goodness! an incredible article dude. Thanks Nonetheless I’m experiencing situation with ur rss . Don’t know why Unable to subscribe to it. Is there anybody getting an identical rss downside? Anyone who is aware of kindly respond. Thnkx
Thank you for your blog.Really looking forward to read more. Cool.
Great blog post.Really looking forward to read more. Much obliged.
Fantastic blog article.Thanks Again. Really Cool.
wow, awesome blog.Really looking forward to read more. Really Cool.
Thanks so much for the blog. Much obliged.
each tіjme i ueԁ too read smaller articles thatas well clear thei motive, and that iss also happening with this piece of writinjg which Iam reading at this time.
Thanks, I’ve just been searching for info about this subject for ages and yours is the greatest I’ve came upon till now. However, what about the bottom line? Are you certain in regards to the supply?
Thanks for sharing, this is a fantastic article post.Really thank you! Fantastic.
Im obliged for the blog.Much thanks again. Will read on…
Thanks a lot for the post.Much thanks again.
Very informative post.Thanks Again. Really Cool.
Very neat article post.Really looking forward to read more. Want more.
Great, thanks for sharing this blog article. Keep writing.
male dysfunction treatment ways to treat erectile dysfunction – canadian pharmacy king
Hello! I simply wish to offer you a huge thumbs up for the great info you’ve got right here on this post. I am coming back to your blog for more soon.
A round of applause for your blog. Fantastic.
Looking forward to reading more. Great blog.Really thank you! Awesome.
this is really awesome content ! keep it up ! cbd gummies
A round of applause for your blog.Much thanks again. Awesome.
Hey, thanks for the article.Much thanks again. Want more.
Wow, great article. Really Cool.
It’s in reality a great and helpful piece of info. Iam happy that you shared this useful info with us.Please keep us informed like this. Thank you for sharing.
Fantastic blog post.Thanks Again. Great.
Major thanks for the article.Really looking forward to read more. Keep writing.
Hey, thanks for the blog. Fantastic.
I value the article post.Really looking forward to read more. Really Cool.
Enjoyed every bit of your blog. Cool.
warnings for meloxicam meloxicam for cats meloxicam for cats
hydroxychloroquine and azithromycin azithromycin dosage for strep throat what is azithromycin
I am so grateful for your post. Cool.
Im thankful for the blog.Thanks Again. Fantastic.
what is a synthesis essayexpository essay formatwriting a cause and effect essay
I think this is a real great blog.Thanks Again. Awesome.
What’s up, the whole thing is going nicely here and ofcourse every one is sharing information, that’s truly fine, keep up writing.
Great blog.Really thank you! Really Cool.
I like it when individuals come together and share opinions.Great blog, keep it up!
Post writing is also a excitement, if you be acquainted with afterward you can write if not it is complex to write.
This is one awesome blog post.Really thank you! Great.
Good write-up, IЎ¦m normal visitor of oneЎ¦s blog, maintain up the nice operate, and It is going to be a regular visitor for a long time.
Thanks so much for the post.Really thank you! Keep writing.
Greetings! Very useful advice within this post! It is the little changes that make the most important changes. Thanks a lot for sharing!
To connect with their program hopes relates to the commonalities pertaining to Rolex .
I really liked your article. Will read on…
Enjoyed every bit of your post.Much thanks again. Fantastic.
the dating list online freeuncensored naked tv show adam and eve dating
When I originally commented I clicked the «Notify me when new comments are added» checkbox and now each time a commentis added I get several e-mails with the same comment. Is there any way you can remove people from that service?Bless you!
Great article post.Really looking forward to read more. Really Cool.
Very neat blog.Really thank you! Great.
Hi, I do think this is an excellent blog. I stumbledupon it I am going to return once again since i have saved as a favorite it. Money and freedom is the best way to change, may you be rich and continue to help others.
Thanks for sharing, this is a fantastic blog post.Really thank you! Will read on…
Undeniably believe that which you stated. Your favorite reason appeared to be on the net the easiest thing to be aware of. I say to you, I definitely get irked while people think about worries that they plainly do not know about. You managed to hit the nail upon the top and defined out the whole thing without having side effect , people could take a signal. Will likely be back to get more. Thanks
This is one awesome blog.Thanks Again. Want more.
I really like looking through a post that can make people think.Also, many thanks for allowing for me to comment!
Thanks for the post. Cool.
Enjoyed every bit of your blog article.Much thanks again. Really Great.
Very informative article. Want more.
I value the blog article.Really looking forward to read more. Much obliged.
I truly appreciate this blog. Really Great.
Wow, great article post.Thanks Again. Awesome.
Merci pour les beaux article . Je été recherche ce sujet pour un jour. Les choses et détails que vous montrez , je n’étais pas au courant. Je serai suivant votre blog maintenant et J’espère vous pouvez beaucoup plus pensées et idées.
A round of applause for your blog.Thanks Again. Cool.
Thanks again for the article post. Much obliged.
Very informative blog post.Really thank you! Fantastic.
I think this is a real great blog post.Really looking forward to read more. Cool.
Thanks for finally writing about > Appeal Court In Pennsylvania Goes Against Joe Biden, Trump Rejoice
chloroquine diphosphate chloroquine diphosphate
Thanks so much for the blog.Really thank you! Cool.
Wow that was strange. I just wrote an really long comment but after I clicked submit my comment didn’t show up. Grrrr… well I’m not writing all that over again. Regardless, just wanted to say fantastic blog!
Hey there! Do you know if they make any plugins to safeguardagainst hackers? I’m kinda paranoid about losing everything I’veworked hard on. Any recommendations?
It is in point of fact a nice and useful piece of information. I am satisfied that you simply shared this useful info with us. Please keep us informed like this. Thanks for sharing.
Enjoyed every bit of your blog post.Thanks Again. Awesome.
I really like and appreciate your blog.Really looking forward to read more. Fantastic.Loading…
A round of applause for your blog article.
This paragraph will assist the internet viewers for building up new blog or even a blog fromstart to end.
There’s definately a great deal to find out about this subject. I really like all the points you have made.
I have not checked in here for some time because I thought it was getting boring, but the last several posts are good quality so I guess I?¦ll add you back to my everyday bloglist. You deserve it my friend
ivermectina para humanos ivermectin dose for scabies
Saved as a favorite, I like your blog!
Hello, yes this paragraph is actually fastidious and I have learned lot of things from it about blogging.thanks.
Hey there! Do you know if they make any plugins to safeguard against hackers?I’m kinda paranoid about losing everything I’ve worked hardon. Any recommendations?
I value the article. Really Great.
northwest canadian pharmacy — pllsok.com canadian pharmacy phentermine
Thank you for your blog. Keep writing.
ยูสเดียวจบ มีครบทุกอย่าง เล่นง่าย จ่ายจริง ฝาก-ถอน ไม่มีขั้นต่ำ มั่นคงปลอดภัย
warnings for tizanidine zanaflex medication zanaflex migraine
I need to to thank you for this very good read!! I certainly enjoyed every little bit of it. I’ve got you book-marked to check out new stuff you post…
I really liked your blog post.Really thank you! Really Cool.
Very informative post.Much thanks again. Really Cool.
Im thankful for the blog.Much thanks again. Fantastic.
Very good blog post.Much thanks again. Really Cool.
rubinetto bitcoin gratuitobitcoin for live 11e72ec
Appreciate you sharing, great article.Thanks Again. Want more.
Major thanks for the article post.Much thanks again. Great.
Ich weiß, wenn das nicht zum Thema gehört, aber ich überlege gerade, mein eigenes Weblog zu starten, und war neugierig, was alles required ist, um set up zu bekommen? Ich nehme an, ein Blog wie Ihres würde einen hübschen Cent kosten? Ich bin nicht sehr web savvy, also bin ich mir nicht 100 positiv. Irgendwelche Empfehlungen oder Ratschläge würden sehr geschätzt. Kudos
prednisone for dogs – prednisone 10 prednisone 54092
Hello! Do you know if they make any plugins to assist withSearch Engine Optimization? I’m trying to get my blog to rank for some targeted keywords but I’m not seeing very good gains.If you know of any please share. Thank you!
Normally I don’t learn article on blogs, however I would like to say that this write-up very forced me to check out and do so! Your writing style has been amazed me. Thanks, quite great article.
Your style is very unique in comparison to other folks I have read stuff from. I appreciate you for posting when you have the opportunity, Guess I will just bookmark this page.
May I simply say what a relief to discover somebody that actually understands what they’re talking about online. You certainly know how to bring an issue to light and make it important. More people need to check this out and understand this side of your story. It’s surprising you aren’t more popular given that you most certainly possess the gift.
Im thankful for the blog.Thanks Again. Really Great.
Hmm is anyone else encountering problems with the images on this blog loading? I’m trying to figure out if its a problem on my end or if it’s the blog. Any responses would be greatly appreciated.
topic of this paragraph, in my view its actually remarkable for me.
Im not sure where you are getting your information, however good topic. I must spend some time studying much more or working out more. Thank you for fantastic information I was in search of this info for my mission.
I’m now not sure the place you are getting your information, but great topic.I needs to spend some time learning much more or understanding more.Thanks for fantastic information I was on the lookout for this information for my mission.
bookmarked!!, I love your web site.
What’s up, just wanted to tell you, I liked this blog post.It was helpful. Keep on posting!
I really enjoyed this blog post. Thanks for sharing it. You do an excellent job on this blog!
clonopine meaning what is hydroxychloroquine sulfate
Spot on with this write-up, I absolutely think this website needs a great deal more attention. I’ll probably be returning to read more, thanks for the advice!
excellent points altogether, you simply gained a new reader. What would you suggest about your post that you simply made some days ago? Any positive?
An impressive share! I have just forwarded this onto a colleague who had been doing a little research on this. And he actually bought me lunch due to the fact that I stumbled upon it for him… lol. So allow me to reword this…. Thanks for the meal!! But yeah, thanx for spending time to talk about this subject here on your blog.
Remarkable! Its really remarkable piece of writing,I have got much clear idea about from this paragraph.
Howdy! This blog post couldn’t be written much better! Reading through this post reminds me of my previous roommate! He continually kept preaching about this. I’ll send this article to him. Pretty sure he’s going to have a good read. I appreciate you for sharing!