With a new MAN Engines authorization, expanded training, and decades of Volvo Penta experience, the family-run California company is growing alongside increasingly sophisticated marine propulsion systems.
SAN RAFAEL — There was a time when repowering a boat could be described fairly simply: take out an aging engine and put in a new one.
Modern marine propulsion has made the process considerably more involved.
Electronic controls, integrated helm systems, diagnostics, emissions requirements, and increasingly sophisticated onboard technology have changed the engines that power today’s vessels — as well as the expertise required to install and maintain them. For boat owners, deciding whether to repair, repower or upgrade an aging vessel, access to properly trained technicians has become an increasingly important part of that equation.
Helmut’s Marine Service in San Rafael has spent decades building its business around that side of boating. Founded in 1988 by Helmut Ahollinger, the family-owned company provides marine engine sales, parts, service, diagnostics, and repower support for recreational and commercial vessels.
Long associated with Volvo Penta, the company became the very first Volvo Penta Power Center. Today, it serves as the Volvo Penta Power Center Authorized Distributor for California, Hawaii, Arizona, New Mexico, Nevada, Utah, and Guam.
In 2026, the company expanded its engine offerings by becoming an authorized MAN Engines dealer, a move that Vice President Nadine Urciuoli said complements rather than replaces the company’s longstanding relationship with Volvo Penta.
“Volvo Penta has been the foundation of our business since my father, Helmut Ahollinger, founded the company in 1988,” Urciuoli said. “We were the first Volvo Penta Power Center, and that relationship isn’t changing.”
The addition of MAN allows the company to extend its services into a larger class of yachts and commercial vessels while addressing what Urciuoli described as a gap in authorized service.
“What MAN adds is reach into the larger end of the market and filling a need where there was a large service gap,” she said. “MAN’s high-output diesels power bigger yachts and commercial vessels than we’ve traditionally served. Owners of those boats have often had to look far afield for an authorized dealer.”
As an authorized MAN Engines dealer, Helmut’s now provides engine sales, service and genuine parts from its San Rafael facility. For Urciuoli, the expanded range means customers can turn to the same company for propulsion support across a wider variety of vessels.
“For our customers, it means one trusted shop can support a wider range of vessels, from a sailboat auxiliary to a large motor yacht,” she said.
For recreational boat owners, one of the more practical parts of the company’s work involves repowering, an option Urciuoli said more owners are considering as the price of purchasing a new boat continues to climb.
“We’re seeing more owners choose to repower rather than replace,” she said. “Many owners have a hull they know and trust, a layout they love and years of upgrades already invested. A new engine can give that boat another long chapter at a fraction of the cost of a comparable new vessel.”
A repower, however, involves considerably more than selecting an engine with the appropriate horsepower. The process begins with evaluating how a boat is used, its existing engine configuration, available space, weight and power requirements. Depending on the installation, engine mounts, fuel and cooling systems, electrical connections and other components may need modification before testing, commissioning, and sea trials can be completed.
It can also provide an opportunity to modernize more than the engine itself.
Depending on the propulsion package, Volvo Penta’s Electronic Vessel Control platform can integrate features including glass cockpit displays, joystick driving, Dynamic Positioning System, Assisted Docking and Power Trim Assist. Owners can also access engine information through Volvo Penta’s Easy Connect app.
“These upgrades often make a boat easier, safer and more enjoyable to run than the day it was new,” Urciuoli said.
Knowing when to consider a repower varies from boat to boat. Urciuoli said warning signs can include increasing repair bills, difficulty obtaining parts, excessive smoke, oil consumption, or hard starting. Other owners may choose to repower because they want improved fuel economy, reduced emissions, quieter operation, or access to newer marine technology.
As propulsion systems become more sophisticated, the work required to maintain them is changing as well.
“A marine technician today is part mechanic, part electronics specialist,” Urciuoli said. “Modern engines are electronically controlled and networked with the helm, joystick systems, and navigation.”
Systems such as Volvo Penta IPS integrate the engine, drive and steering, meaning diagnosing a problem may require factory software and specialized tools in addition to traditional mechanical knowledge.
“Diagnosing them takes factory software, the right tooling and an understanding of how the whole system communicates, not just a good set of wrenches,” she said.
That evolution has made continuing technical education an important part of the company’s operations. Helmut’s technicians participate in ongoing Volvo Penta factory training as new engines, systems and software are introduced. The company also uses diagnostic tools such as fluid analysis, which can identify signs of internal wear before a larger failure occurs. Its technicians carry Transportation Worker Identification Credential cards, allowing them to work at secured ports and commercial terminals.
Training also extends beyond the company’s own employees. In 2024, Helmut’s became an authorized Volvo Penta training location and now provides instruction for dealers across its distribution territory.
“We believe a properly trained dealer network means engines are properly cared for wherever a boat is serviced,” Urciuoli said. “That gives owners a reliable engine they can count on, whether they’re taking their loved ones out on the water or running a commercial operation that depends on it every day.”
The emphasis on training addresses another issue facing marine businesses: finding the next generation of skilled workers.
“Every boat on the water depends on someone who knows how to keep it running, and there aren’t enough of those people coming up behind the current generation,” Urciuoli said.
Helmut’s regularly hires technicians, parts advisors and service advisors, and promotes employees from within. Urciuoli said one of the industry’s biggest workforce challenges is simply making young people aware that those careers exist.
“These are skilled, well-paying careers that don’t require a college degree, and many young people simply don’t know they exist,” she said. “Students hear about automotive and diesel programs, but rarely about the marine trades.”
The company has responded with several workforce and community programs. It sponsors Spaulding Boatworks’ Boatworks 101 program and, for the third consecutive year, hosted Waves of Opportunity, which introduces young people to the marine environment through whale-watching and fishing trips.
Helmut’s also hosted Chart Your Course at the Sausalito Boat Show this fall. Trade and vocational students received complimentary admission and a “passport” directing them to participating marine businesses where they could learn about jobs throughout the industry. The company also sends technicians to yacht clubs and brokerages to discuss modern engine service.
“Our goal is to show people what this work actually looks like,” Urciuoli said.
Although Helmut’s is headquartered in Northern California, its work extends well beyond its San Rafael facility. As Volvo Penta’s distributor for a multi-state territory, the company provides training, parts and technical support to local authorized dealers rather than attempting to replace them.
That network is particularly relevant for Southern California boaters who may never bring a vessel to San Rafael but rely on a local dealer supported by Helmut’s.
“As the Volvo Penta distributor for the region, our job is to support local dealers, not compete with them,” Urciuoli said. “In Southern California and throughout our territory, that means backing dealers with training, parts and technical support, and pointing owners to their nearest qualified dealer.”
Strengthening that network is part of the company’s longer-term plan, along with continuing to expand its capabilities for both Volvo Penta and MAN-powered vessels.
“Our focus is being a true partner to boat owners, not just a place to buy an engine or drop off a boat,” Urciuoli said.
That means providing owners with clear information about repairs and costs before work begins, using trained technicians and genuine parts, supporting boaters through the dealer network and determining whether a repair, repower or technology upgrade makes the most sense for an individual vessel.
“We want Helmut’s Marine Service to be the call that owners, brokers, and other dealers make when they need help they can trust,” Urciuoli said. “As a family business, we know many of our customers by name, and some have been with us since my father opened the doors in 1988. Those relationships are what we’re building for.”
For boaters, the developments ultimately come back to a familiar concern: keeping an existing boat operating reliably. Repowering can provide an alternative to replacing an entire vessel, but increasingly integrated propulsion technology also means the people installing and maintaining those systems must continue evolving alongside the engines themselves.
For Helmut’s Marine Service, expanding its engine offerings, training technicians and developing the marine workforce are different parts of the same effort. The engines may be changing, but boats still depend on knowledgeable people to keep them running.
Helmut’s Marine Service is based in San Rafael. More information about its engine sales, repower, service and training programs is available through Helmut’s Marine Service.
