Research

Use of a virtual reality physical ride-on sailing simulator as a rehabilitation tool

Abstract

Participation in sailing by people with disabilities, particularly in small sailboats, is widely regarded as having positive outcomes on self-esteem and general health for the participants. However, a major hurdle for people with no previous experience of sailing, even by those without disabilities, is the perception that sailing is elitist, expensive, and dangerous. Real-time "ride-on" sailing simulators have the potential to bridge the gap between dry-land and on-the-water sailing. These provide a realistic, safe, and easily supervised medium in which nonsailors can easily and systematically learn the required skills before venturing out on the water. The authors report a 12-wk pilot therapeutic sailing program using the VSail-Access sailing simulation system followed by on-water experience. After completion of the training, all subjects demonstrated the ability to navigate a simple course around marker buoys (triangular configuration) on the computer screen, the ability to sail independently in winds of moderate strength (up to 14 knots) on water, and measurable improvements in their psychologic health. In addition, the subjects were able to participate in a sports activity with their respective family members and experienced a sense of optimism about their future.

An Immersive Virtual Sailing on the 18th - Century Ship Le Boullongne

Abstract

The work presented in this paper is the result of collaboration between historians and computer scientists whose goal was the digital reconstitution of Le Boullongne, an 18thcentury merchant ship of La Compagnie des Indes orientale. 1 This ship has now disappeared and its reconstitution aims at understanding on-board living conditions. Three distinct research laboratories have participated in this project so far. The first, a department of naval history, worked on historical documents, especially the logbooks describing all traveling events of the ship. The second, a research laboratory in archaeology, archaeoscience and history, proposed a 3D model of the ship based on the original naval architectural plans. The third, a computer science research laboratory, implemented a simulation of the ship sailing in virtual reality.

Assessment of upwind dinghy sailing performance using a Virtual Reality Dinghy Sailing Simulator.

Abstract

The ability of fourteen competitive helmsmen of different skill levels to sail a standard course towards the wind (upwind) was assessed using a virtual reality sailing simulator. The simulator consisted of a Laser dinghy deck which pivoted between two supports and was dynamically controlled by a computer driven pneumatic ram. Computer generated graphics realistically reproduced helming, sheeting, tacking and boat trim. After familiarisation with the simulator, subjects performed a standard 1 km upwind test and were ranked according to their completion time. The subjects were then asked to fill out a questionnaire to obtain an estimate of how effectively the simulator reproduced the conditions of actual sailing. Mean scores showed the sailors considered overall feel and simulation of physical movement as "good" (5 on a scale of 1 to 6). Rankings for the upwind test were compared with independent competition rankings for each subject. Overall time to complete the upwind test correlated well with a subject's external ranking (Spearman's rank order r=0.99). The results indicate that the test used can differentiate between variations in upwind sailing performance over a wide range of ability. The simulator thus provides for the first time a method of measuring and analysing a sailor's performance in a controlled laboratory setting.

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