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NEW. Ðîñîìàõà (img) ðóññêèé êîíêóðåíò Harbercraf / Jetcraft

Byuer Guide Ðóêîâîäñòâî ïîêóïàòåëÿ

Ôîòîãðàôèè ñ âûñòàâêè "MIBS 2009"

Çàêîí è êàòåð. Ïîñòàíîâêà íà ó÷¸ò êàòåðà ñî ñòàöèîíàðíûì äâèãàòåëåì.

Êàëüêóëÿòîð(Calculator)

äþéìû â ñàíòèìåòðû

Ñëîâàðü ( Dictionary ).

Ñðàâíèòü ( Compare Boats )

Òåîðèÿ ( Theory ).

Ôîðóìû íà òåìó... ñ ïåðåâîäîì.

Harbercraft

1875 J-Max White Water (img)

2075 White Water

(img)

1875 J-Max XS (img)

2175 XS Ôîòîãðàôèè ñ âûñòàâêè "Îõîòà è ðûáàëêà - 2008"

Marathon Marine and Northwest Jet Boats (link)

PHANTOM Jet Boats (link)

RiverPro®. (link)

North Silver PRO 675Jet lnk

Ðîñîìàõà (img)

Tom 525. Òîìü 525.

Êîëëåêöèÿ ññûëîê íà òåìó: âîäîì¸òû äëÿ ñóäîâ (Links).

5 White Water test drive

Êóðñ äîëëàðà

Äðóçúÿ

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. ÍÀ ×ÒÎ ÎÁÐÀÒÈÒÜ ÂÍÈÌÀÍÈÅ ïðè ïîêóïêå ëîäêè.

I

Introduction.

Ââåäåíèå

Welded Boats in General:

Ñâàðíûå ëîäêè â îáùåì

Our Bias

Íàøè ïðåäïî÷òåíèÿ

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  Ïîêóïàåì ñâàðíóþ ëîäêó ïåðâûé ðàç

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. Øèðèíà äíèùà è ìîùíîñòü äâèãàòåëÿ....

Turning ability.

Stability at Speed: Porpoising versus bow down  Ñòàáèëüíîñòü ñêîðîñòè Äåëüôèíèðîâàíèå.

The Hook.

Spray Line?.

Boat Materials: Aluminum versus Fiberglass . Ìàòåðèàëû äëÿ êàòåðà

Cost differences between glass and aluminum .  Ñðàâíåíèå ñòîèìîñòè ñòåêëîâîëîêíà è àëþìèíèÿ.

Types of Aluminum. Òèïû àëþìèíèÿ.

Material Thickness

A Word about Welding

Suck marks, caterpillar tracks

Folded, ‘Origami’ Construction

Hull Design

Delta Keel.

Deadrise (Vee)

Planing Hull Bottom Types Êîðïóñ ñ äíîì ïëîñêîãî òèïà

Constant deadrise V (including modified V hulls)

Flat bottom hulls (8 degrees deadrise or less)

Bow Entry Types. Òèï íîñà êàòåðà

Shallow Entry

Sharp Entry

Radius Bottom Êðóãëîå äíî.

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

Ñèëîâàÿ óñòàíîâêà.

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:

Ãëàâíàÿ ñòðàíèöà

Ëîäêà. Íà ÷òî îáðàòèòü âíèìàíèå.

JETCRAFT. Âîäîì¸ò. Âîäîì¸òíûé äâèæèòåëü. Òåîðèÿ. Ëîäêà. Íà ÷òî îáðàòèòü âíèìàíèå. Ðóêîâîäñòâî ïîëüçîâàòåëÿ. (Boats: What to Look For . Buyer guide)