JETCRAFT. Водомёт. Водомётный движитель. Теория. Лодка. На что обратить внимание. Руководство пользователя. (Boats: What to Look For . Buyer guide)

Главная страница

Лодка. На что обратить внимание.

     Marathon Marine - web.  Cтатья очень доходчиво рассказывает НА ЧТО ОБРАТИТЬ ВНИМАНИЕ при покупке лодки или водомётного катера.

NEW. Росомаха (img) русский конкурент Harbercraf / Jetcraft

 

Byuer Guide Руководство покупателя

 

Фотографии с выставки "MIBS 2009"

Закон и катер. Постановка на учёт катера со стационарным двигателем.

Калькулятор(Calculator)

дюймы в сантиметры

Словарь ( Dictionary ).

Сравнить ( Compare Boats )

Теория ( Theory ).

 

Форумы на тему... с переводом.

 

Harbercraft

1875 J-Max White Water (img)

 

2075 White Water

(img)

 

1875 J-Max XS (img)

 

2175 XS Фотографии с выставки "Охота и рыбалка - 2008"

 

Marathon Marine and Northwest Jet Boats (link)

 

PHANTOM Jet Boats (link)

 

RiverPro®. (link)

 

North Silver PRO 675Jet lnk

 

Росомаха (img)

 

Tom 525. Томь 525.

 

Коллекция ссылок на тему: водомёты для судов (Links).

5 White Water test drive

Курс доллара

 

 

 

 

Друзъя

 

207

 

Introduction

 

We chose the name Marathon because of the strength of the products and the

 

commitment we put into building everything we do. Building a quality product is our

 

number one commitment at Marathon.

 

More inches of weld. Higher quality alloy materials. More man-hours dedicated to each

 

product. It's what sets Marathon apart from the rest.

 

We're so committed to making a superior product that our craftsman sign their name on

 

every boat they build as a symbol of superior quality and a personal guarantee.

 

Then we thoroughly test our boats through a series of vigorous inspections on and off the

 

water to insure they meet our high expectations and exceed yours.

 

Better Built. Tested Tough. That's A Marathon.

 

We've been building boats with pride for over 30 years. Come see why a Marathon Boat

 

will be the last boat you'll ever own!

 

Welded Boats in General:

 

Having come to the boating business from another industry, it was amazing the BS we

 

found. All the ‘conventional’ wisdom was not necessarily wisdom but opinion. Being in

 

over our heads at the time was doubly frustrating, as we had thought it was straight

 

forward. As we found our bearings we realized that it must be doubly frustrating for the

 

customer. What follows is a distillation of Marathon’s philosophy and approach to boat

 

building. It is not necessarily right, and you the reader should be wary of it as it may just

 

be another sophisticated line of BS.

 

However, this much we can guarantee. If you are looking for a boat and can form and

 

own your own opinions on the following topics you will likely end up with a boat that is

 

right for you – whether you buy it from Marathon Marine or not. And that is the bottom

 

line to us, as another sale of a heavy gauge welded aluminum boat in the industry creates

 

one more convert to this wonderful product.

 

Our Bias

 

Marathon has 30 years experience building the toughest recreational boats around,

 

namely heavy gauge, welded aluminum jet powered riverboats which operate in extreme

 

water conditions. Marathon has a reputation of building not only a durable boat (most 20

 

–30 year old boats are still out there) but also a hull which is smooth and predictable.

 

Marathon’s philosophy is to get the hull right, and everything important follows namely

 

ride durability and turning.

 

We build heavy gauge, welded aluminum boats, both prop and jet, but our primary claim

 

to fame is jet boats.

 

Secondly, our boats tend to be overbuilt for the general user - if there is an option, we

 

tend to overdo it. We build our boats for longevity and all round use. Our reputation is

 

based on a quality, enduring hull that steers where you want and does not fall apart.

 

If you are looking for speedboats or racers, other firms have more expertise in this area.

 

Secondly, if you are looking for a heavy duty, offshore boat that can handle storms, gales

 

and breaking seas, then you need a tougher boat than Marathon currently builds and has

 

experience with. If you are the type of person that is going to go out in all conditions

 

offshore or in the Great Lakes then there are some excellent builders, particularly on the

 

Pacific coast.

 

If however you are the typical adventuresome person who will go just about anywhere,

 

but keeps an eye on the weather and conditions Marathon boats are second to none as an

 

affordable, heavy-duty boat for river, lake and close to shore ocean use. Our boats have

 

handled the odd Arctic Ocean storm and survived on the Great Lakes, Great Bear Lake,

 

Lake Winnipeg and Lesser Slave Lake.

 

We also build in the North Northwest for customers that take their boats on 10 day trips

 

in remote locations in temperatures that range from -20F to 100+F. A critical requirement

 

for these users is reliability and shelter from the elements - being exposed to sleet at 25F

 

is not much fun if you do not have heat and protection from getting wet.

 

 

Boats: What to Look For. НА ЧТО ОБРАТИТЬ ВНИМАНИЕ при покупке лодки.

I

Introduction.

Введение

Welded Boats in General:

Сварные лодки в общем

Our Bias

Наши предпочтения

Shop for a Manufacturer First

 

Look in the used boat ads

 

Judging the Production Staff

 

Manufacturer Reputation

 

Buying a Welded Boat for the First Time  Покупаем сварную лодку первый раз

 

Know the Boat you want

 

There is no Perfect Boat

 

Take a test ride.

 

Acceleration out of the hole

 

Bottom Width and Engine Size and Type. Ширина днища и мощность двигателя....

 

Turning ability.

 

Stability at Speed: Porpoising versus bow down  Стабильность скорости Дельфинирование.

 

The Hook.

 

Spray Line?.

 

Boat Materials: Aluminum versus Fiberglass . Материалы для катера

 

Cost differences between glass and aluminum .  Сравнение стоимости стекловолокна и алюминия.

Types of Aluminum. Типы алюминия.

 

Material Thickness

 

A Word about Welding

 

Suck marks, caterpillar tracks

 

Folded, ‘Origami’ Construction

 

Hull Design

 

Delta Keel.

 

Deadrise (Vee)

 

Planing Hull Bottom Types Корпус с дном плоского типа

 

Constant deadrise V (including modified V hulls)

  

Flat bottom hulls (8 degrees deadrise or less)

 

Bow Entry Types. Тип носа катера

 

Shallow Entry

 

Sharp Entry

 

Radius Bottom Круглое дно.

 

Lift Forces Explained.

 

Lateral Stability During Planing Turns

 

Bottom Shape and Jet Intake

 

Planing Ability

 

Reverse Chines

 

Bottom Width: Flair is not everything

 

No Trim.

 

Hull Construction Standards

 

Shallow Water Operation

 

No Exposed Drive

 

Safety

 

Thrust line and Center of Gravity In line

 

Propeller Torque is Different than Impeller Torque

 

Propulsion Resistance.

 

Power Plants

Силовая установка.

Derived from Impeller Curves.

 

RPM Curve Derivation

 

Conclusion

 

Hull Resistance.

Boat attitude..

 

Jet Drives

 

How jets work .

 

Impeller

 

Cut.

 

Cut, Speed and Load

 

Wear ring.

 

Nozzle

 

Stator.

 

Hard Anodized.

 

Cavitation .

 

Intake

 

Seals

 

Mixed flow

 

Axial flow.

 

Outboard jet:

 

Inboard jets:

 

So, what is the best jet?

 

Corrosion.....

 

UHMW...

 

Jet Diagnosis...

 

Rattle at Idle (V8 boats)

 

Speed too low for a Given RPM.

 

Poor acceleration or ‘holeshot’, combined with high top end

 

Definitions.

 

Porpoising .

 

Chine walk: 9

 

Ram effect .

 

Static thrust:

 

Водомётный движитель. ТЕОРИЯ.

 

Адрес для переписки:

Spiridonov S. E.

Главная страница

Лодка. На что обратить внимание.

JETCRAFT. Водомёт. Водомётный движитель. Теория. Лодка. На что обратить внимание. Руководство пользователя. (Boats: What to Look For . Buyer guide)