tom logisch

16/10/2026

Not every shipyard installs our enteron® wastewater treatment system with the same attention to serviceability as STEELER. With a setup like this, annual maintenance is a pleasure! 😉

Since the system is located directly beneath the guest bed, the macerator pump has been installed in a dedicated, sound-insulated compartment in the toilet area — making maintenance easier while keeping noise to a minimum.

🚤 Ready to upgrade your yacht with an enteron® wastewater treatment system?

Say goodbye to the hassle of frequent pump-outs and help prevent illegal wastewater discharges. Enjoy greater independence, convenience and peace of mind on board.

👉 Get in touch today

08/10/2026

FROM OLD TO NEW. WILL IT GET DIFFICULT? ❓

The major shipyards are getting serious. The yacht market is changing faster than many people realize.

Due to the difficult market situation and the sharp decline in new-yacht sales, Groupe Beneteau is now responding: used yachts — particularly those coming out of the charter business and around 10 to 14 years old — are to be professionally refitted.

The idea: Several hundred yachts per year could be given a second life — either returning to the charter market or being sold on the used-boat market, potentially even with a shipyard warranty.

Whether this will make economic sense remains to be seen.

The situation today is different: New-yacht prices have risen dramatically. At the same time, there are few reasons to retire a yacht after ten years when a GRP hull can easily last for many decades.

From an environmental perspective, professional refit therefore makes a lot of sense. Why produce new GRP yachts when existing boats can continue to be used for many more years?

The challenge lies in the details ➡️ Building a new yacht is completely different from taking apart a 10- or 14-year-old yacht and rebuilding it.

During new construction, furniture, equipment and systems are installed in a defined sequence. During a refit, everything is already assembled. A machine may have to be removed through a tiny hatch. Cables, pipes and installations have to be exposed. Surprises are more the rule than the exception.

This requires highly qualified teams. Refit means troubleshooting, finding individual solutions, experience and skilled craftsmanship.

So the crucial question is: Does it make economic sense?

If new-yacht prices remain at their current high levels, the answer could be yes. Because in that case, the market for high-quality, relatively young used yachts will continue to grow.

Large shipbuilding groups are now beginning to actively serve this market. A shipyard that originally built a yacht theoretically has an advantage when it comes to refitting it: It knows the construction, systems and installation philosophy.

But a refit also has to make economic sense.

Beneteau is therefore sending an important signal:

👉 Used yachts are becoming more important.
👉 Refit is becoming a business model in its own right.
👉 Shipyards need to adapt.

The market is changing — faster than some people think.

That is why I welcome the fact that the major shipbuilding groups are responding.

At the same time, I would like to see more movement in yacht recycling. Beneteau is already making significant progress in electrification as well.

And perhaps one day we will see the next major step:

solving the wastewater problem on board 🚽🚾

Now the major shipyards just need to show that they are also willing to use these solutions themselves.

Read more:

https://tomlogisch.com

08/10/2026

WATERMAKER?? TOTALLY UNNECESSARY — THERE’S DRINKING WATER EVERYWHERE!!

We hear this all the time.

“They’re noisy.”
“They’re huge.”
“They constantly break down.”
“And in the end, they just sit there unused.”

Then comes one simple question:

“Do you actually have one on board?”

Quite often, the answer is:

“No.” 😉

And that’s where an important point gets overlooked:

A watermaker isn’t problematic because the technology doesn’t work.

It becomes problematic when it is incorrectly sized, poorly operated, or simply not used often enough.

Imagine this:

You’ve been anchored in a beautiful bay for several days.

Perfect weather.
No reason to head back to the marina.

Showers. Cooking. Brushing your teeth. Freshwater toilets.

And every day, the tank gets a little emptier.

Suddenly, the relaxed question becomes:

“Where are we going to get water?”

That’s exactly where a properly sized watermaker makes a difference.

And no — you don’t necessarily need a huge, noisy high-pressure system.

The first mistake is made when choosing the size.

Many people think:

“The bigger, the better.”

With watermakers, that can be exactly the wrong approach.

An oversized system simply doesn’t run often enough.

And lack of use is one of the worst things for a watermaker.

The membrane needs regular operation and flushing. With proper use and maintenance, modern membranes can last for many years — often around six to seven years, and sometimes considerably longer.

So the rule is simple:

Don’t buy the biggest watermaker. Buy the right one.

As a rule of thumb, determine your average daily water consumption and divide it by three. This gives you a good starting point for the required hourly production capacity.

Then comes the second question:

High-pressure or Energy Recovery?

Traditional high-pressure systems use a high-pressure pump to generate the required pressure.

They work — but they consume more energy and can be considerably noisier.

Modern Energy Recovery systems reuse a large part of the energy within the system, allowing them to operate much more efficiently and quietly.

And on a yacht, that makes a huge difference.

Because who wants to listen to a high-pressure pump while enjoying breakfast at anchor?

With modern systems, your watermaker can run quietly in the anchorage without turning your peaceful morning into an engine-room experience.

So the real question isn’t:

“Do I need a watermaker?”

It’s:

“Which watermaker is right for MY yacht?”

How many people are on board?
How much water do you actually use?
How long do you typically stay at anchor?
How much energy is available?
How important are noise and weight?
How frequently will the system actually run?

Get these questions right, and you don’t end up with another piece of equipment sitting unused on board.

You get freedom, independence and fresh drinking water wherever you choose to anchor.

We have installed hundreds of watermaker systems and work with them every day — from selection and installation to maintenance and service.

Our advice?

Don’t buy a watermaker based on brochure specifications alone.

Choose one that fits your yacht, your energy system and, most importantly, your life on board.

Because the best watermaker isn’t the biggest one.

It’s the one you use regularly — and the one that fits your needs perfectly.

As an exclusive Schenker Watermakers dealer, we offer the latest models at competitive prices.

👉 Request your personal quotation here:

https://tomlogisch.com/schenker/

06/10/2026

TRUDESIGN SEACOCKS

Having the right information can save you a significant amount of money. Having the right experience or knowing the right suppliers and specialists, can save you even more.

In this series, we will take a closer look at key components for long-range yachts and vessels designed to be lived aboard permanently or for extended periods. We will regularly highlight products that, in our experience, can make a real difference in safety, reliability and long-term operating costs.

Today: Seacocks.

Every vessel needs seacocks to control the flow of water through the hull from outside to inside and vice versa. They are used for engine and generator cooling, watermakers, heat exchangers, air-conditioning systems, grey-water and sewage systems, as well as many other onboard applications.

For decades, high-quality bronze and specialist-alloy valves were the industry standard. Properly manufactured, these products can last for decades. However, in series yacht construction, cost and space constraints have increasingly led to smaller and less expensive metal valves.

The problem? Metal valves are vulnerable to corrosion and galvanic processes, including dezincification. Over time, this can significantly weaken the material and turn a seemingly minor component into a serious safety concern. Frost can also cause severe damage when a vessel remains in the water during winter.

This is why we have been using TruDesign for many years.

The New Zealand manufacturer produces seacocks and skin fittings from glass-fibre-reinforced nylon composite. The result is high mechanical strength at low weight, combined with resistance to corrosion and electrolysis.

Depending on the model, TruDesign valves are designed for applications both above and below the waterline and are certified to international standards, including ISO 9093:2021, IMCI and Bureau Veritas.

Another advantage is serviceability: the ball and seals are designed for smooth, reliable operation, while individual components can be replaced rather than necessarily requiring the complete valve to be discarded.

TruDesign also offers monitored ball valves, allowing the valve position to be remotely monitored and, in certain applications, integrated into engine or generator start interlock systems.

There is one point to consider: composite valves can require slightly more installation space than very compact metal alternatives. This needs to be taken into account during the design phase.

Our recommendation when purchasing or refitting a yacht:
Do not cut costs on seacocks. Quality components are an investment in safety, reliability and, ultimately, lower maintenance and replacement costs.

In our upcoming posts, we will look at further components that matter on long-range and liveaboard vessels.

More information:
https://tomlogisch.com

04/09/2026

The French boating market in 2026: decline or transformation? 🇫🇷⛵

New boat sales in France are down 5.2% year-on-year — but the figures tell only part of the story. While new boat purchases remain under pressure, the used-boat market, maintenance, refit and charter activities are proving more resilient.

The real shift? Customers are taking longer to decide, buying more cautiously and increasingly focusing on the use and value of their boats rather than ownership itself.

A closer look at the French market reveals why the boating industry may be undergoing a transformation rather than simply a downturn.

👉 Read the full analysis by BoatIndustry.com.

https://www.boatindustry.com/news/52500/french-water-sports-in-2026-why-the-decline-in-sales-tells-only-part-of-the-story?utm_source=boatindustry&utm_medium=email&utm_campaign=newsletter

The news site for professionals in the nautical industry | BoatIndustry.com

30/08/2026

WASTEWATER DISCHARGE REGULATIONS FOR YACHTS WORLDWIDE

Anyone planning a long-distance voyage or moving between cruising areas should familiarize themselves with the wastewater discharge regulations that apply to toilets and blackwater around the world. They can vary considerably from one region to another — almost like a book with seven seals.

And that is exactly what makes the topic so interesting. So I had this map created to give a general overview.

🔴 RED: Discharge prohibited — for example, in many harbors, bays, protected areas, and designated coastal waters.

🟡 YELLOW: Discharge permitted only under certain conditions — depending, for example, on distance from the coast, wastewater treatment, or vessel type.

🟢 GREEN: In certain offshore areas, discharge may generally be permitted, provided the applicable requirements are met.

Particularly strict regulations apply in areas such as the Baltic Sea, numerous U.S. No-Discharge Zones, and various protected areas around the world. In other regions, distance limits such as 3 or 12 nautical miles may apply — but these rules do not automatically apply in the same way to every private yacht.

The key point is: there is no single worldwide set of “yacht wastewater laws.”

My recommendation: When in doubt, keep it in the tank and pump it out ashore.

Because being “far offshore” does not automatically mean that discharge is legally permitted.

By the way: even with an approved wastewater treatment system on board, discharge in U.S. coastal waters can still be prohibited in certain areas and violations can be subject to severe penalties.

In other areas, having a properly approved marine wastewater treatment system on board can, of course, be a very sensible choice.

We build wastewater treatment and holding-tank systems in many different sizes — including systems for yachts with up to 12 people on board.

Simply get in touch here:

https://tomlogisch.com/enteron/



The map graphic was created using AI.

28/08/2026

Any technology can fail from time to time. It is particularly frustrating when a problem occurs just before the weekend or when, like many others, you are making the most of the final days of the season and are already on your way to winter storage with your yacht.

However, many technical problems have a very simple underlying cause that we can often identify during a short video call. In some cases, you may even be able to fix the problem yourself afterwards.

For such enquiries, you are welcome to contact our hotline and briefly describe the problem. If you would like us to call you back directly, simply include your mobile phone number. Otherwise, we will respond by email:

Book your individual help service here. The more details you provide, the better. As a rule, tom logisch will support all its own products as well as the products of our exclusive partners and dealers. We advise you personally via telephone, Apple FaceTime, Zoom or Microsoft Teams video chat. Depend...

25/08/2026

Even on large, historic shipyards, modern vessels are being built today. And we’re proud to be part of that with our enteron® onboard wastewater treatment system.

If you no longer want to discharge your onboard wastewater into rivers, lakes, or the sea, we’d be happy to hear from you:

https://tomlogisch.com/enteron/

enteron® – purifies your wastewater completely.

21/08/2026

LATE SUMMER IS THE BEST TIME OF YEAR ON BOARD FOR MANY ⛵️

The peak of summer is over, the cruising areas are getting quieter, and peace is returning to the anchorages. For many, this is when the most enjoyable time of the year on board begins.

And for more and more people, a yacht or houseboat is no longer just a holiday destination — it has become a home and workplace.

To make that lifestyle work comfortably and sustainably, three technical areas are crucial:

⚡ 1. Energy – not just for the batteries

Reliable 230V power with sufficient capacity is no longer a luxury on board. Laptops, coffee machines, electric cookers, kitchen appliances and bread makers all need dependable power.

With a properly sized energy system, you can even cook entirely electrically today — for example, with induction. This not only reduces gas consumption but can also provide a significant safety benefit on board.

💧 2. Water – why keep carrying bottles?

If you live on the water, access to clean drinking water should be a given.

With drinking water treatment and, depending on the cruising area, seawater desalination, you can produce both drinking and utility water directly on board.

That saves plastic, money and, above all, valuable storage space. And yes — it also means your shower can occasionally last longer than 30 seconds. 😉

♻️ 3. Wastewater – the underestimated challenge

This is where things get technical — and, in many cruising areas, infrastructure can become a real problem.

A widespread and reliably functioning network of wastewater pump-out stations simply doesn’t exist in many places. Numerous older stations are now broken or have disappeared altogether. At the same time, nobody wants to discharge wastewater illegally into the water.

Our solution: fully biological wastewater treatment directly on board.

Our enteron® marine wastewater treatment systems operate without chemicals and are designed to require as little maintenance as possible. Regular inspections and necessary service work can be carried out by the boat owner.

The treated water is purified to a level that allows discharge again. The systems are IMO-certified and are particularly interesting for larger yachts, houseboats and boats used as permanent residences.

👉 So the real question is:

How self-sufficient does a boat actually need to be for you to live on board permanently — and comfortably?

Are solar, batteries and a watermaker enough? Or has onboard wastewater treatment become just as essential to modern marine technology?

What do you think? What is absolutely essential on board if you want to live there for several months — or even permanently?

I’m looking forward to hearing about your experiences and opinions.

And if you’re still planning your life on board, I’m always happy to help personally:

https://tomlogisch.com/schedule/

12/06/2026

Many owners of houseboats and permanently inhabited vessels face the same challenge: what to do with 🚽 wastewater on board?

The reality is simple: life on board generates wastewater volumes similar to those of a household on land.

While holding tanks are mandatory, they often create problems ➡️ unpleasant odours, insufficient capacity, and limited disposal options.

The result: environmental impacts that are neither acceptable nor compliant with today’s regulations.

This is exactly why we developed the enteron® range.

Our fully biological wastewater treatment systems provide a sustainable and convenient solution for ships and houseboats – completely chemical-free and fully automated.

✔ Fully biological wastewater treatment
✔ No chemicals required
✔ Fully automatic operation with display monitoring
✔ Optional remote monitoring – ideal for charter fleets
✔ Retrofit-friendly – in many cases installed within a single day
✔ IMO-compliant and certified accordingly

The enteron® 50 single is designed for vessels equipped with an existing holding tank.

The enteron® 50 offers an integrated solution for up to four people. For larger applications – including greywater treatment as well as wastewater from washing machines and dishwashers – the enteron® 80 to enteron® 160 models are available.

Whether you live aboard long-term, operate a houseboat, or want to future-proof your charter fleet, we would be pleased to help you identify the right solution for your needs.

📩 Send us an enquiry – we will be happy to provide individual advice on the optimal wastewater solution for your vessel:

https://tomlogisch.com/enteron/