Welcome to OSG Charter, your safety-focused, comfort-forward, premium charter boat experience out of the state-of-the-art Flamingo Marina (Slip E-12)! From on-water excursions to Tamarindo sport fishing charters, we offer a range of customizable packages, including nearshore and deep-sea fishing (ideal for sailfish & marlin fishing in Costa Rica), private sunset cruises, guided surf excursions, spearfishing, and more.

It all began with owner Laura Mooney, an avid angler and consummate adventurer. After a fortuitous encounter inspired her to break away from the status quo and reexamine her life goals, she purchased Sassy Girl (our premium vessel) and founded OSG Charter as an invitation to live your greatest adventure.

At OSG Charter, we’re passionate about your memorable experience, unparalleled comfort, and on-water safety, and we pride ourselves on professionalism, flexibility, and a deep and abiding respect for the environment. Our knowledgeable, bilingual crew is led by expert U.S.C.G. Licensed Captain, who has 20+ years of local experience.

With every trip, we strive to inspire wonder, curate adventure, and create the kind of moments that you’ll reminisce about for a lifetime.

Sassy Girl

Sassy Girl

Fishing Charter

Welcome to M/V Sassy Girl, our tournament-rigged 40′ Tides Custom Carolina Express, powered by dual 500 hp commercial-rated Lugger power plants and modern Navionics. She is tricked out with premium finishes, all the Costa Rica sportfishing bells and whistles, and amenities that cater to both seasoned anglers and novices alike.

OSG Charter
Your Onboard


Originating from Virginia’s rugged coastal waters, Sassy Girl is built for challenging waters, with a solid fiberglass hull that guarantees a smooth ride, even on rough days, while the iconic “Carolina” flare adeptly handles wind and spray.

Sassy Girl features an expansive and uncluttered cockpit – an ideal arena for engaging multiple fish, generously accommodating both anglers and crew. Blue Water Chairs take pride of place at her coveted Battle Station, where you’ll find a spacious fish box and livewell.

Ascend to the bridge for ample seating, thoughtfully designed for day-long comfort with ample space, excellent airflow, and refreshing shade. Moving forward, enter the finely appointed, air-conditioned, and cozy cabin, complete with a full restroom.

  • Builder: Tides Marine
  • Year Built: 1999
  • Model of Vessel: 40′ Custom Carolina Classic
  • Length Over All (L.O.A): 40 feet
  • Beam: 13 feet 6 inches
  • Registered Beam: 14 feet
  • Draft: 3 feet 6 inches
  • Depth: 4.0 feet
  • Propulsion System: Twin Diesel Engines
  • Fuel Type: Diesel
  • Fuel Capacity: Main tank – 500 Gallons
  • AC Power: Single 50 amp, 120/240 volt
  • DC Power: 12 volt
  • Fresh Water Capacity: 70 Gallons
  • Downriggers: Achieve precise depth control for your lures with our efficient downriggers.
  • Live Bait Wells: Keep your bait lively and enticing with our advanced live bait wells.
  • Rod Holders: Ample rod holders ensure easy access and storage for all your fishing gear.
  • Fish Boxes: Spacious fish boxes preserve your catches in optimal condition during your angling journey.
  • Outriggers: Enhance your trolling capabilities and maximize your catch potential with our reliable outriggers.
  • Tuna Tower: Gain an elevated vantage point for spotting fish and managing lines with our integrated tuna tower.
  • Full Custom Tackle by Lobo Lures: Experience fishing excellence with our premium custom tackle from Lobo Lures.
  • Electric Dredge Setups: Optimize your bait spread and increase your chances of success with our electric dredge setups.
  • Bridge Teasers: Attract fish from afar using our specially designed bridge teasers.
  • Electric Tower Teasers: Elevate your teasing game with our electric tower teasers, designed to entice fish closer.
  • Cockpit Teasers: Engage multiple fish simultaneously with our cockpit teasers, enhancing the action.
  • Diawa Spinning Setups: Equip yourself with Diawa spinning setups for a versatile and effective fishing experience.
  • Shimano TLD 25’s: Catch with confidence using Shimano TLD 25 reels, renowned for their reliability.
  • Shimano Speed Master 30’s: Swift and powerful, Shimano Speed Master 30 reels are a testament to performance.
  • Avet 30’s and 50’s: Trust in the durability and strength of Avet reels to conquer even the most challenging fish.
  • Deep Drop Setups (Bent-Butt): Explore the depths with ease using our deep drop setups featuring bent-butt rods.
  • Battle Station: A dedicated battle station ensures you’re prepared for intense fights and memorable catches.
  • Livewell: Keep your live bait fresh and lively in our well-designed livewell.
  • Center Rigger: Increase your spread’s effectiveness and target more fish with our efficient center rigger.
  • Full Marlin Tower with Controls: Command the waters from an elevated position with our comprehensive marlin tower.
  • Tuna Door: Simplify the process of bringing in your prized catches with our convenient tuna door.

M/V Sassy Girl is equipped with top-tier technology to enhance every aspect of your journey.

2x Garmin Touch Screen Displays: Stay ahead of the game with our dual Garmin touch screen displays, offering intuitive navigation and control.

Featuring the Latest:

  • Digital Radar (Open Array): Navigate confidently through any weather condition with our high-resolution digital radar, utilizing an open array configuration.
  • Forward and Side-Scan Sonar / Fish Finder: Uncover hidden underwater treasures and locate the best fishing spots using our advanced forward and side-scan sonar technology.
  • Bluetooth Audio Connection with a Powerful JL Sound System: Set the mood on board with seamless Bluetooth audio connectivity and a robust JL sound system, delivering immersive entertainment and communication.
  • Chart Plotter / GPS: Plot your course accurately and access up-to-date GPS information with our sophisticated chart plotter system.
  • Auto Pilot: Let the M/V Sassy Girl take the helm with confidence using our reliable auto pilot system, allowing you to focus on other critical aspects of your journey.

2x VHF Radios: Stay connected with the world and fellow boaters through our dual VHF radios, ensuring clear and effective communication at all times.

Meet Our Crew

Captain Lee


With 20+ years of experience and expertise in our local Costa Rican waters, U.S.C.G. Licensed Captain Lee has worked as captain and mate throughout the western hemisphere – from his home waters in South Carolina to the Bahamas, the Galapagos, and the Caribbean. He is a master at locating the day’s active hotspots and is skilled in an array of techniques, including trolling, bottom fishing, and fly fishing.



With years under his belt as a professional mate, William (who you’ll spot in many of our photos!) is an expert at spotting fish quickly – and in helping you reel one in, as soon as they’ve grabbed your lure. He is a local billfish expert and an excellent mate to have at your side when sailfish or marlin fishing in Costa Rica.



Step aboard and you’ll quickly discover that Tommaso is passionate about two things: fishing and your safety. He’ll be on hand to help you choose the right lure, reel in a hard fighter, and keep your entire party – even the youngest and newest aboard – safe throughout your adventure.


OSG Charter

OSG Charter

Our bilingual, U.S.C.G. Licensed captain and multilingual crew carry not only Costa Rican certification, but also the highest-caliber international qualifications, including STCW certification, Coast Guard licensing, Red Cross CPR certification, and SOLAS training. We comply with and exceed all USCG and Costa Rica Coast Guard requirements and mandates

Our bilingual captain is a native English speaker and has 20+ years of Tamarindo sport fishing experience. Our crew speaks also speaks English and Spanish, assuring crystal-clear communication – always important onboard, and even more so if you’re boating with children or first timers aboard.

We offer top-of-the-line equipment, tournament-grade tackle, and modern navigation electronics (Navionics), to ensure a successful day on the water and a premium experience when sport fishing out of Flamingo Marina. If you’re a fishing tech or safety nerd, like we are, we’re happy to talk details!

Few area charter boats can rival the capacity, comfort, and size of Sassy Girl. Our custom Carolina express has a sporty, well-appointed, and robust fishing platform, paired with a smooth ride, 360º views, and premium finishes, including an air-conditioned cabin and full restroom facilities aboard.

Whether you’re celebrating a special occasion or simply prefer beach pickup for your on-water excursion or Tamarindo sport fishing charter, we offer optional add-ons to enhance your adventure with gourmet menus (including premium beverages), professional photography, spearfishing or fly-fishing, and other options.