As a USCG-certified QMED, Margarita has built her career as a Marine Engineer with comprehensive expertise across all major yacht systems. For the past four years, she has served as engineer aboard a 105’ explorer yacht, overseeing diesel engines, generators, HVAC, plumbing, electrical, and watermakers. Her disciplined approach to preventative maintenance, contractor coordination, and system reliability ensures vessels remain safe, efficient, and owner-ready.

In addition to daily operations, Margarita has managed shipyard refits, system upgrades, and specialized repairs, consistently delivering solutions that keep programs running smoothly. Her hands-on technical skill, combined with a commitment to precision and efficiency, provides yacht owners with confidence that their vessels are maintained to the highest standards of performance and longevity.

A USCG 100 Ton Master Captain with a highly driven and versatile background, Stephanie has built her career at the intersection of yacht operations and executive-level program management. She has worked aboard both private and charter yacht programs across The Bahamas, Caribbean, and U.S. East Coast while also overseeing vessel accounts and budgets, managing all facets of guest accommodations, itinerary planning, vendor negotiations, and project coordination.

Her foundation as an Executive Assistant in high-level corporate environments sharpened her organizational and leadership skills—tools she now applies to managing vessels, crews, and owners’ priorities with efficiency and discretion. As co-founder of GB Marine Yacht Services, Stephanie is recognized for her operational focus, attention to detail, and ability to streamline complex management tasks, ensuring every yacht under her care remains reliable, compliant, and owner-ready.

A USCG 200 Ton Master Captain, Jeff has spent his life on the water. Born and raised in Miami, he has been operating boats since childhood and brings unmatched knowledge of South Florida’s waterways, as well as extensive cruising experience throughout The Bahamas and Caribbean. He has managed and operated a wide range of vessels, from center consoles to luxury motor yachts over 100 feet, with a strong focus on modern, recently built yachts. This background has instilled in him an exceptional standard of maintenance and program oversight, ensuring that every vessel under his care remains in optimal condition.

Known for his precise boat handling and calm leadership, Jeff has developed a reputation as a captain who ensures safety, professionalism, and owner confidence on every voyage. Beyond his operational expertise, he is a highly accomplished fisherman with skills spanning offshore, reef, and spear fishing—an ability that enhances guest experiences and reflects his lifelong connection to the sea. Whether piloting a yacht or planning an itinerary, Jeff’s depth of local knowledge and passion for the water make him a trusted captain for both owners and guests.

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A USCG 500 Ton Master Captain with more than 20 years of maritime experience, Giuliano has managed and operated vessels ranging from 40’ center consoles to 115’ motor yachts. His career spans private yacht programs, shipyard refits, project oversight, and complex maintenance planning. He has logged extensive cruising throughout South Florida, the U.S. East Coast, The Bahamas, and the Caribbean.

As a U.S. Marine Corps veteran, Giuliano brings discipline, resilience, and leadership to every program he oversees. Combined with his strong technical foundation in diesel engines, electrical, and hydraulic systems, he blends engineering expertise with seasoned navigational skill. As co-founder of GB Marine Yacht Services, he is known for his hands-on approach and commitment to precision—delivering safe, reliable, and turnkey yachting experiences for every client.