Numerical simulation of sediment deposition thickness at Beidaihe International Yacht Club

The finite element method （FEM） was used to simulate sediment hydrodynamics at the Beidaihe International Yacht Club, and a two-dimensional model was established. The sediment movement and deposition were analyzed under many tidal conditions in conjunction with the hydrological regime of the Daihe River. The peak value of the sediment deposition thickness appears in the main channel and around the estuary. The sediment deposition thickness is essentially constant and relatively small in the project area. The sediment deposition thickness in the main channel, in the yachting area, and around the hotel is greater than the other areas in the project. Regular excavation and dredging of the channel is the best measure for mitigating the sedimentation.

Numerical Simulation of Multi-Directional Random Wave Transformation in a Yacht Port

This paper extends a prediction model for multi-directional random wave transformation based on an energy balance equation by Mase with the consideration of wave shoaling, refraction, diffraction, reflection and breaking. This numerical model is improved by 1) introducing Wen's frequency spectrum and Mitsuyasu's directional function, which are more suitable to the coastal area of China; 2) considering energy dissipation caused by bottom friction, which ensures more accurate results for large-scale and shallow water areas; 3) taking into account a non-linear dispersion relation. Predictions using the extended wave model are carried out to study the feasibility of constructing the Ai Hua yacht port in Qingdao, China, with a comparison between two port layouts in design. Wave fields inside the port for different incident wave directions, water levels and return periods are simulated, and then two kinds of parameters are calculated to evaluate the wave conditions for the two layouts. Analyses show that Layout I is better than Layout II. Calculation results also show that the harbor will be calm for different wave directions under the design water level. On the contrary, the wave conditions do not wholly meet the requirements of a yacht port for ship berthing under the extreme water level. For safety consideration, the elevation of the breakwater might need to be properly increased to prevent wave overtopping under such water level. The extended numerical simulation model may provide an effective approach to computing wave heights in a harbor.

Recent Industrial Developments of Marine Composites Limit States and Design Approaches on Strength

To further exploit the potential of marine composites applications in building ship hulls,offshore structures,and marine equipment and components,design approaches should be improved,facing the challenge of a more comprehensive and explicit assessment of appropriately defined limit states.The structure ultimate/limit conditions shall be verified in principle within the whole structural domain and throughout the ship service life.What above calls for extended and reliable materials characterization on the one hand and for accurate and wide-ranging procedures in structural analyses.This paper presents an overview of recent industrial developments of marine composites limit states assessments and design approaches,as available in open literature,focusing on pleasure crafts and yachts as well as navy ships and thus showing a starting point to fill the gap in this respect.After a general introduction about composites characterization techniques,current design practice and rule requirements are briefly summarized.Both inter-ply and intra-ply failure modes and corresponding limit states are then presented along with recently proposed assessment approaches.Three-dimensional aspects in failure modes and manufacturing methods have been identified as the main factors influencing marine composite robustness.Literature review highlighted also fire resistance and hybrid joining techniques as significant issues in the use of marine composites.

Physical Properties and Exchange System of Seawater in Royal Yacht Club Marina in the Northernmost Gulf of Aqaba

This research was aimed at studying the general environmental status of the marina at Royal Yacht Club (RYC), which is located in the Jordanian Gulf of Aqaba. The physical properties (temperature, salinity and density) were measured at surface and bottom water at 19 sites (T1 - T19). Total hydrocarbon was measured at surface at 12 sites (HC1-HC12). The water exchange and residence time were calculated using data of current speed and direction at 16 sites (C1 - C16). The mean values of temperature, salinity and density at surface and bottom waters in the RYC’s marina were 27.13°C ± 0.03°C, 40.51 ± 0.02 psu and 26.83 ± 0.02 kg·m-3, respectively. The results of physical parameters revealed no significant differences among sites, which are all comparable with open waters. The measurements range of total hydrocarbon in the marina was 1.404 mg/l (at site HC11) to 98.56 mg/l (at HC9). In general, all the high values of total hydrocarbon were found at the corners of the marina and at areas with relatively intense boats’ movements. There was no correlation between distribution of total hydrocarbon and temperature (R2 = 0.048;p = 0.49) in the marina. Therefore, the major factors that influence the distribution of total hydrocarbon within the marina are the current system and boats’ movements as well as the location reference to the gate. The residence time of waters inside the marina was 1.32 days. This flushing time is acceptable to secure good environmental conditions inside the marine to avoid stagnant seawater. The mean value of current speed at the RYC’s marina gate with open water was 5.33 ± 2.63 cm/s, which is relatively comparable with current speed in vicinity of study area. In conclusions, the environmental condition of the RYC’s marina is acceptable in term of the residence time and exchange system with open water. Slightly high values of total hydrocarbon were detected, which can be solved by regular cleaning.

A Preliminary Study on the Construction of Yacht Club Alliance

In order to break the restrictions for yachts to navigate across districts, to provide convenience for yacht club consumers and to inaprove the operation circumstance of yacht clubs, it is imperative to construct yacht club alliance. Based on the definition of yacht club alliance, the article interprets the significance of yacht club alliance and puts forward the approaches and methods to construct yacht club alliance. Yacht clubs can realize the alliance objectives by sharing club members, training professional yacht talents, setting up yacht lease platform, holding annual meeting and forum, press conference.

Tank Tests with a Scaled Model of a BOC-50 Sailing Yacht Model in Calm Water and in Regular and Random Head Waves

In this paper the performance of a BOC-50＇ sailing yacht model in calm water and in realistic sea states is investigated experimentally. A scaled model of the hull form with the keel-bulb configuration has been tested in the towing tank of the LSMH of NTUA. During the tests the calm water resistance and the dynamic responses, including the added resistance in waves were recorded. Results referring to the resistance, the side force, the CG displacement, the pitch as well as the vertical accelerations of the model at the bow, the CG and the stern are presented. Moreover, by using a Velocity Prediction Program the polar and the stability diagram of the tested sailing yacht were calculated. Useful conclusions about the dynamic behavior of the model were obtained.

Application of Feature Curves and Shape Blending on Yacht Designing

The global yacht market share and industry might expand continually since increasing people are willing to enjoy the yacht life in lower price nowadays while yacht activities were regards as a luxury acitivity in the past.Additionally,Taiwan Residents yacht manufacturers are well-known worldwide.They show excellent performances on the international annual rankings which implies Taiwan has excellent manufacturing technologies.However,Taiwan Residents manufacturers so far do not have a mature local design team.Therefore,this study goals to developing a systematic and objective design method for hull designing,which facilitates designers to design innovative yachts or create a series product with brand recognition.This study is divided into three parts:the first part is the investigation of the yachts market;the second is establishing a shape blending platform;the third is 3D forming.Finally,it is used the existing ship CAD software to design an innovative yacht based on the blended curves and then calculates its basic hydrostatic performance.This study provides a quantitative method to create a new form and to preserve the features for a brand.The exist yacht combines with other graphics to create a new form and maximizes the features of the original graphics.

46 Motor Yacht海上别墅

开放,明媚的大海。宽广,慵懒的河流。波光粼粼,银色的湖泊。当你有机会在水上花时间——那么你惯常的想法就将被永远的改变以。一旦你了解到在海上生活的无限乐趣,那么你千万不要错过了生活中这些美妙的享受。在这里,或许Carver卡福游艇将带你实现!

Yacht—A New Urban Leisure Fashion

China (Xiamen) International Boat Show 2011 boosts the development of the coastal city With the theme of "Yacht-A New Urban Leisure Fashion",China(Xiamen)

Good Maintenance Preserves The Value of Yachts Xiamen Marina Boats Servicing Center introduced specialist service of Italy

Wuyuan Bay marina is the rising star as a yachting sports and leisure center in Xiamen City, southeast China’s Fujian Province. China (Xiamen) International Boat Show 2011 was held between

YACHT STYLE 当时尚“下海”

对于一个女人来说,拥有世界顶级的时尚奢侈品,可能是人生中最快乐的事情之一;对于一个男人来说,拥有能够征服浩瀚大海的高品质游艇,可能是人生中最拉风的事情之一。在这个从不缺少快乐和拉风的世界里,跨界成为最时髦的享受方式,而一旦跨界联姻的双方是时尚品牌和游艇,那一定会碰撞出让女人和男人都为之神往的火花。