marine_products-electrical-exhaust_systems-largeIt had never been so obvious to me until the day I drove the new Cruisers Yachts 48 Cantius. I was out with Todd Trepanier, one of Cruisers Yachts top technicians. I was doing a boat review for Canadian Yachting and Todd was aboard because it was hull Number 1 and absolutely brand new, so he was adjusting things and running factory sea trials.

At dockside, we had the sunroof fully open and the glass aft bulkhead too. As we headed out into Lake Michigan, we accelerated up to high speed. It started to get windy and cool so we closed the glass aft bulkhead and the huge glass sunroof.

It was just like rolling up the window in your car at highway speed. Suddenly, everything was peaceful and quiet. In fact, the 48 Cantius turned out to be one of the quietest boats I have ever been in.

Many new powerboat designs feature Volvo Penta IPS or CMD MerCruiser Zeus pod drives. Both are installed back near the transom and use a through-hub exhaust. Engine noise exits into the water underneath the boat. By being so quiet, the 48 Cantius would be substantially more comfortable on a cruise than one where you hear the drone of the engine exhaust.

Almost any inboard powered boat, sail or power, would be more quiet and comfortable if it was fitted with mufflers. Luckily, mufflers for virtually any boat are available from such companies as Centek Industries, Custom Marine, Livorsi Marine and Vetus America.

Marine exhaust mufflers can be divided into two basic types: dry exhaust and wet exhaust. Wet exhaust has engine cooling water in the flow, cooling the exhaust significantly. Few pleasure craft use a dry exhaust. They are generally quite noisy and heat dissipation can be a safety issue. A diesel engine exhaust can be 600 degrees C exiting the engine. Best to cool that.

Many marine wet exhaust mufflers use fiberglass-reinforced plastics because this type of construction will not corrode or deteriorate when exposed to gasoline or diesel fumes mixed with salt or fresh water. Resistance to higher temperatures wards off warping or melting which has been a factor in some rubber or plastic mufflers.

Next, choosing a muffler for your boat starts with the following basic considerations.

1. Engine Location – Engines located at or below the loaded water line (LWL) require some type of a "lift" muffler to prevent cooling water from flowing back into the engine.

2. Exhaust System Size – Larger engines require larger diameter exhaust systems and more space. The parts must be large enough to carry the cooling water and gases through the system without creating back pressure in excess of the engine manufacturer's recommendations.

3. Noise Reduction – Muffler size and internal design will determine the amount of noise reduction achievable in a given installation. Larger mufflers deliver better silencing but space limitations may dictate the size and type of muffler that can be used.

Some underwater discharge systems can be retrofitted as long as sufficient space is available. For power boats with gasoline engines that now have wet exhaust running through the transom above the waterline, a simple exhaust tip might work, dropping sound levels but not horsepower. This winter, talk to your dealer or repair yard about a muffler system for your boat and get more enjoyment out of the people you take onboard!

Destinations

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Following the harsh impact of Hurricanes Irma and Maria, The British Virgin Islands is making an ...
For the adventurous boater Bunsby Marine Provincial Park is a special place, situated due south of ...
We’re gliding through green-blue waters, colours so vivid and bright they hurt your eyes. We’re set ...
The Halifax waterfront has been attracting more and more large yachts in recent years. However, a ...
Ah Canadian simplicity at its finest; small town, big marina. Little Hilton Beach (population ...
Vancouver-based Big Blue Yacht Charters Worldwide owner Emma Murdoch explains that luxury crewed ...
In the 1920s, a small cove in Canoe Bay was used as a shipping point and safe-haven for rum runners ...
Here’s an update from Caroline Swann with some news for the adventurous types who may be heading to ...
The New Glasgow marina is located about six miles up the East River of Pictou in the heart of the ...
The British Virgins took a huge hit last fall from Irma. Boats were stranded on the shore by the ...

Thornbury on Georgian BayJennifer Harker

To borrow a line from Monty Python, “and now, for something completely different”.

Normally, our boating adventures are spent weaving our way amongst the picturesque backdrop of the 30,000 Islands of eastern Georgian Bay aboard our Sea Ray Sundancer 268. This time we’ve traded power for sail as friends welcome us aboard their 38-foot Irwin for the Canada Day long weekend.

We’ve set our sights on a decidedly different destination for this journey, charting a course for Thornbury. This small town, located in the southern reaches of Nottawasaga Bay, is an oft-overlooked area of Georgian Bay - but it shouldn’t be. Although we’ve explored this shoreline on countless road trips, this will be our first visit from the waterside.

Read more about the Thornbury on Georgian Bay...

 

Lifestyle

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My husband and I were visiting the Bra d'Or Lake from Newfoundland in our 39 foot Sea Ray ...
After an autumn in Canada, we arrived back in northern Florida at Adamant 1 on January 3rd and with ...
This issue, to kick off 2019, we have an unofficial Photo of the week and this, the unofficial ...
Readers give us a bit of feedback on the 60th anniversary of the Shark 24
We are home for Christmas this year. Soon we will be heading back to Adamant 1 for another winter ...
This past October we drove to Telegraph Cove with friends and spent a day of wonder cruising the ...
We have kept our subscription to Canadian Yacht Onboard as we have traveled the South Pacific over ...
Stuart Walker a legend in competitive sailing passed away on November 12, 2018 in Annapolis. Stuart ...
“In Grenada, we had about 80 cruiser kids visit our boat...by dinghy of course! Sometimes you ...
Austin Edwards told students and parents at the Saanich School’s “Parents as Informed Partners” ...

Boat Reviews

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I have heard a lot of talk lately about trends in yacht clubs where senior membership is getting ...
To get you in the mood for cruising the Boat Show then launching in spring, here’s a boat that ...
Quite simply, the styles of boats have changed. Where in past years a buyer might have been looking ...
At the boat shows, the Ranger Tugs’ classic tugboat lines always grab the crowds, with the wives ...
Sometimes a great idea requires an encore, and French yacht builder Jeanneau got that with the ...
Tactical Custom Boats announces the sale to a North American client of a custom Tactical 77’ – Fast ...
Bruce Elliott is an inventor. And when he sold the technology he developed to build utility poles ...
One often asks of a winning achievement or a fabulous design, could it have possibly been done ...
The latest new model from Cruisers Yachts is the Cantius 42 and this yacht made its debut in the ...
The Sabre 45 Salon Express is new for 2017, making its debut at the Fort Lauderdale International ...

Cruisers Yachts Cantius 46The Cantius 46 is the latest evolution of Cruisers Yachts’ Cantius line – now there are five models from 42 to 60 feet. The new Cantius 46 is a great example of “easy boating” the way Volvo Penta imagined it and how Cruisers Yachts has executed it. The idea is that you just come on board, unlock the glass doors, fire it up, cast off, and enjoy - alone, with a spouse, or with a huge group.

Since the first Cantius model was introduced, Cruisers Yachts has continued to refine the concept for ever-greater convenience, more clever and innovative features, and also greater performance.

Read more about the Cantius 46...

 

 

 

 

Sun Odyssey 410By, Zuzana Prochazka

The revolution continues – with a twist

The Jeanneau 410 is the eighth generation of the Sun Odyssey line, but even with that long history and umpteen years of tweaks and iterations, what the French builder has done in the latest revamp will make you say, “Wait, what?”

 Last year, Jeanneau turned the sailboat deck layout on its ear with the introduction of their Sun Odyssey 490 and 440, and the concept of the ‘walk-around deck’.

Read More about the Odyssey 410...

 

 

 

DIY & How to

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Electrical ground is a term used to describe the reference point in an electrical circuit from ...
Last time we looked at making proper electrical connections – the tools, supplies and methods ...
Winter is a great time to look at some of the hidden spaces on your boat – to take stock of what is ...
When a boat is in the water, the bilge will often collect water that enters the boat from weather, ...
Recently I suggested doing an off-season (winter) project with a potential client, and my ...
A recent conversation with a fellow contractor got me thinking: With all of the information out ...
As the cold approaches, shrink-wrapping is a hot topic, and I’ve heard more than a few debates at ...
Nothing stops a vacation faster than a problem with the fresh water system – be it leaks, smells, ...
Pyrotechnic distress flares have been around for decades, while electronic strobe distress flares ...
Most of us don’t give a second thought to our sacrificial anodes – those curious knobs of raw metal ...

Ask AndrewAndrew McDonald

Last time we looked at making proper electrical connections – the tools, supplies and methods needed to make connections between components and wiring.

When planning out electrical work, one of the more common questions that I address is on the set-up, installation and sizing of breakers and fuses.

Fuses and breakers are collectively called ‘overcurrent protection’ – and these come in many different shapes, styles and sizes. Their purpose is the same: to prevent a situation where a larger than intended electrical current is running through the circuit, which puts the circuit at risk of overheating, fire and damage to equipment. 

Read More about Electrical Installations Basics...