UBI 556 Customized Aluminum Cruising Yacht 5.56m 6 PAX Inboard Engine Anti-Slip New 2026 Model Petrol/Gasoline

Description

Small Pleasure Boat Standard
1. MAXIMUM PERSONS CAPACITY
A. Protected Waters Calculation (Clause 2.2.2)
* Method: Based on outboard motor weight and a simplified formula.

* Max Engine Weight: 295 kg (or actual weight if heavier)

* Resulting Capacity: 6 Persons (540 kg total mass)

* ⚠️ Important Note: This calculation determines the number on the plate but does not automatically satisfy the full stability
requirements of Section 5 of the standard. A physical stability test is still mandatory.

B. Open Waters Stability Verification (Section 5)
This analysis confirms the vessel can safely carry the 6-person capacity in open water conditions.
* Heeling Moment from Passengers (Hp):
* Total Mass of Occupants: 540 kg

* Max Internal Breadth: 2.1 m

* Passenger Heeling Moment (Hp): 1,852 Nm

* Heeling Moment from Wind (Hw):
* Factor P (Open Waters): 375

* Area Above Waterline: 7.39 m²

* Distance between Centers of Areas: 0.91 m

* Wind Heeling Moment (Hw): 2,532 Nm

* Stability Test Analysis:
* Maximum Heeling Moment for Test: 2,532 Nm (Governed by Hw)

* Total Mass of Boat in Test Condition: 1,935 kg

* GZ Arm (Righting Arm) in Test Condition: 0.133 m

* Calculated Angle of Heel: 10 degrees

* Allowable Heel Angle: 14 degrees

* STATUS: PASS ✅
* Freeboard Check:
* Loss of Freeboard at 10° heel: < 25% * STATUS: PASS ✅ Conclusion: The vessel successfully passes the stability criteria for open waters with a maximum capacity of 6 persons. 2. FLOTATION (BUOYANCY) REQUIREMENTS * Standard: AS 1799.1-2009 for vessels over 6m. * Flotation Type: Basic Flotation (The vessel will float in a swamped condition, but not necessarily level or upright). * Mass Calculations: * Dry Mass of Hull & Deck: 930 kg * Submerged Mass of Hull & Deck: 750 kg * Mass of Equipment: 60 kg * Engine Submerged Mass: 205 kg (From Table 2.1) * Foam Requirements: * Aluminium Factor (Table B1): 0.62 * Foam Density: 30 kg/m³ * Volume of Foam Required: 1.21 m³ * Weight of Foam: 36.3 kg * Buoyancy Statement: * A Buoyancy Statement is NOT REQUIRED for this vessel according to the standard. 3. AUSTRALIAN BUILDERS PLATE (ABP) - FINAL SUMMARY The following maximum ratings are to be displayed on the official Builders Plate: ParameterRatingCalculation BasisMAXIMUM POWER200 HPEngine manufacturer rating / structural limits.MAXIMUM ENGINE WEIGHT275 kg Determined from stability and flotation calculations.MAXIMUM PERSONS6Governed by the stability test (Section 5).MAXIMUM LOAD874 kg Sum of persons (540 kg) and all other variable load.