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Step aboard Limitless and embrace a life of endless adventure on the water! This classic 1998 Robertson & Caine 4500 Catamaran combines timeless design with modern functionality, offering reliable performance and luxurious comfort for your next seafaring journey. Don’t miss your chance to own this exceptional vessela perfect blend of performance, style, and comfort on the beautiful waters of Montenegro. Liveaboard family has owned her since 2017 and sailed her throughout the Caribbean, across the Atlantic Ocean, and throughout the Mediterranean. Extensive overhaul underway and fresh bottom paint.
Equipment: Key Features & Specifications Electrical System: AC Power: 110V. House Bank: 735-hour 12V AGM battery (replaced April 2022). Wind Energy: 2 Coleman 400 Watt Marine Wind Turbines (installed July 2018; Solar Power: 415-watt solar panels (installed 2017) with a Blue Sky Energy solar charger. Starter Batteries: For both engines and genset (replaced April 2022). Monitoring & Charging: Xantrex Link Pro battery monitor (installed summer 2018), 2 Blue Sea Systems ACR Charging relays, and 2 Xantrex TrueCharge 2. Genset: 6KW Northern Lights with 3,500 operating hours. Power, Sails & Rigging: Engines: 2 Yanmar 4JH2E 50HP each (2,900 hours). Sails: oMain sail and stack pack (purchased 2018). oJib (purchased 2017). oGennaker (purchased 2019). Rigging: All running and standing rigging replaced in 2022 at Marina Di Ragusa by SISail. New lazy bag, 2025. Plumbing: Watermaker: Spectra Cape Horn Extreme (installed August 2018). Fresh Water Capacity: 2 100-gallon tanks. Blackwater System: All plumbing and heads replaced in 2018; 2 forward heads are electric and 2 aft heads are manual (Port and Starboard Aft heads replaced February 2022) Galley: Cooking: New Eno cooker (installed 2019). Propane System: Regulator replaced February 2022. Refrigeration: A huge deep freezer with a cold plate system that can run off the engine-driven compressor or generator (once cold, only 1 hour per day is needed to maintain temperature) and a refrigerator replaced in Summer 2018. Electronics & Additional Features: AIS System: Vesper Marine AIS (installed summer 2018). Navigation Suite: Raymarine radar, navigation system, wind instruments, and fish finder. Communications: Standard Horizon VHF. Satellite Communication: Iridium Pilot system (installed summer 2018). Cockpit: Flexiteak installed throughout (August 2018). Air Conditioning: 2 air conditioners (each 5,000 BTU, installed May 2018).
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
SA/D = SA ÷ (D ÷ 64)2/3
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Ballast / Displacement * 100
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
CSV = Beam ÷ ³√(D / 64)
LAYOUT
Berths : 8 to 11
Heads : 3 or 4
Showers : 4 or 5
Cabins : 3 or 4
Holding Tank Capacity : 45 gal.
Mainsail: 80m2/861 sq.ft.
Genoa: 56m2/603 sq.ft.
Spinnaker: 145m2/1561 sq.ft.
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