X43 Flybridge Motor Yacht Architecture&Designed Andrei Rochian built in Manchuria

Описание: X43 Flybridge Motor Yacht Architecture&Designed Andrei Rochian built in Manchuria
We can see the Deck Mold is made so that a NEW CABIN can be built and installed on the existing hull and Deck mold
LOA=13.5m;Hull Lenght = 12.79m;B=4.2m;B Waterline=3.8m;Draft 0.87m
Deadrise angle at transom= 14 degrees;Displacement 15000 kg;Hull area = 82m2'Deck Area= 52m2;Flybridge cabin area =35m2;LWL=11.7m
Propulsion 2x 350 hp Diesel;Fuel 600 liters
The motor yacht has been built built in North East China province of Liaoning formerly known as Manchuria sea trials at the sea of Bohai Gulf of Liaodong

Assessment of the X43 Flybridge Motor Yacht Based on above Data
1. Planing Capabilities:
Displacement to Length Ratio (D/L): The D/L ratio is a key indicator of whether a boat is suitable for planing. Generally, a ratio below 200 suggests that the boat is optimized for planing.
Assessment: A D/L ratio of 146 indicates that the X43 is suitable for planing. It’s well within the range expected for a planing hull, particularly in a motor yacht designed for performance.
Deadrise Angle: The deadrise angle at the transom is an important factor affecting how the hull behaves in rough water and its planing efficiency.
The design features a 14-degree deadrise, which suggests that it strikes a balance between a smooth ride and planing performance. Boats with less than 10 degrees of deadrise typically prioritize speed on flat water, while those with 20 degrees or more are better in rough seas but require more power to plane.
Assessment: With a moderate deadrise of 14 degrees, the X43 should perform well in moderate sea conditions, offering a good mix of comfort and planing efficiency.
2. Speed Potential:
Power-to-Weight Ratio: The power-to-weight ratio (P/W) is an important factor in determining speed.
yacht has 2 x 350 hp diesel engines (700 hp total).
≈0.021hp per pound
This is a relatively common power-to-weight ratio for yachts in this size category, allowing for decent planing speeds.
Predicted Speed: Using a rough estimation method called the "Speed Length Ratio" (SLR), we can estimate the potential speed:
Speed≈3.5×6.2=21.7knots
Assessment: With the given engine power and hull design, the X43 Flybridge Motor Yacht should achieve speeds in the range of 18-22 knots, which is respectable for a yacht of this size. If lighter or more powerful engines are used, speeds could exceed this.
3. Sea Behavior:
Stability and Comfort:
Beam: The beam of 4.2 meters (13.78 feet) provides a good balance between stability and performance. A wider beam tends to improve initial stability, which should make the yacht feel stable at rest and when underway in calm waters.
Deadrise Angle (14 degrees): this is a compromise between comfort and performance. In moderate seas, the boat should be able to handle waves reasonably well, though in very rough conditions, pounding might be more noticeable compared to a deeper-V hull (e.g., with a 20-degree deadrise).
Flybridge: The large flybridge cabin area (35 m²) means a higher center of gravity, which could affect stability, especially in choppy or windy conditions.
Displacement:
With a displacement of 15,000 kg, the boat will have sufficient mass to cut through moderate seas without being excessively tossed about.

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