Marine Systems

Create a Speed/Fuel Burn Curve for Your Boat

Create a Speed/Fuel Burn Curve for Your Boat

Rather than guess what speed you should run your boat, it is important to develop real-world numbers of the speed and burn consumption your boat reaches at various engine speeds in open water. Depending on how your boat is equipped and loaded, and the propeller(s) you have, it is a straightforward process to develop a speed/fuel burn performance curve that will identify the sweet spot for running your boat at cruising speed.

Along the way of determining this ideal speed envelope, you will also get an sixth sense of when the hull and engine is in harmony as she glides through the water with maximum efficiency and reasonable fuel burn. This is a satisfying project every boat owner should create for his or her boat.

Monday Minute - How Hard to Run Your Diesel

Monday Minute - How Hard to Run Your Diesel

Knowing how to properly run your propulsion engine is the key to long term health care in your engine room. I share great advice from Alaska Diesel that relates to all pre-ECM diesel engines, both power and sail.

Monday Minute - Exhaust Systems, The Achilles Heel of Boating

Monday Minute - Exhaust Systems, The Achilles Heel of Boating

Marine exhaust systems are not perfect, and each system variation has its good and bad points. Awareness is key, and knowing you must address this on a regular basis, regardless of engine hours.

Making a Good Boat Better - Part 3 - Both Power & Sail

Making a Good Boat Better - Part 3 - Both Power & Sail

Finding ways to make your trawler or sailboat better capable of traveling offshore. All of these efforts result in a better seaboat, even if you are not planning to cross oceans. And these upgrades will better familiarize you with the many systems on a cruising boat. And that brings confidence.

Making a Good Boat Better - Part 2 - Power

Making a Good Boat Better - Part 2 - Power

We continue our look at how to prepare your boat for going offshore in a powerboat or trawler, and what you should address to make sure things go as planned. The stresses of offshore travel are different from running in protected waters and preventative effort can help ensure a trouble-free passage, which is what we all aim for.

The Dawn of Hybrid and Zero-Fuel Cruising

The Dawn of Hybrid and Zero-Fuel Cruising

Rapid advances in many technologies provides opportunities we have not seen before. While recreational boat lags behind other industries in adoption, we will see future boat choices that have a significantly lower carbon footprint, and allow us to enjoy cruising without impact on the environment.

Designing a Modern Fuel Delivery System

Designing a Modern Fuel Delivery System

Putting together a fuel delivery system is best done by taking a high level view and making it as simple, as accessible, and as futureproof as possible. Eliminate unnecessary fittings, use fire rated, CG-approved fuel hoses and high pressure fittings, and your system should be reliable and trouble free for the life of the boat.

The End of Paper Charts...and More

The End of Paper Charts...and More

So much has happened in our lifetime, so why should anyone be surprised that paper charts are going away? Modern electronic charting and navigation systems at so much better in all ways, whether you are a commercial, government, or recreational mariner. Change is coming...

When His Get Home Saved The Day

When His Get Home Saved The Day

Brian Calvert shares his experience of losing his Cummins diesel engine at a critical place and time. After trouble free operation taking him halfway around the world, its loss put him in peril. Thankfully, he installed a Wesmar auxiliary propulsion unit before leaving Seattle. This get home system saved him from serious consequences off the coast of Borneo.

What's in a Name?

What's in a Name?

The EPA emissions regulations impose strict control of marine diesel engines. How have engine manufacturers coped with the enormity of researching new technology to meet these cleaner emissions  requirements? By global partnering with other engine manufacturers.

Quick Update on Torquing Prop Nuts

Quick Update on Torquing Prop Nuts

I followed up with Michigan Wheel at the Miami show regarding how much torque we should apply to tightening propeller nuts. Still no conclusive answer.

The Truth About Prop Nuts - And Why the Half Nut Goes on First

The Truth About Prop Nuts - And Why the Half Nut Goes on First

There are many boat owners, mechanics, and yard workers who do not install propellers properly. Here is what they should do and why it matters.

Its Proper Name is a Cutless Bearing - Here's Why

Its Proper Name is a Cutless Bearing - Here's Why

The confusion continues over whether it is a cutless or cutlass bearing. There is a right answer, of course. The roots of this bearing will surprise you, and it isn't even nautical.