# Improving Ship Maneuvering Safety with Augmented Virtuality Navigation Information Displays
## 4 Conclusions  
Summarizing the results of statistical tests conducted for ship passage variants using the AV system in the particular scenarios of the simulation experiment, we can see that:  
1. In Scenario 1 for the container ship: 1. The mean distributions of the resultant speed at the moment of container ship's contact with the fender are not statistically different from the mean distribution of the same variable obtained for variants of passages using only visual observation and the other tested systems. 2. The use of the author's AV system during parallel (alongside) berthing of the container ship does not significantly reduce the resultant speed at the moment of the hull's contact with the fender. 3. The mean distribution of maneuvering time does not differ significantly from the mean distributions of the same variable obtained for the variants using only visual observation and other systems. 4. The use of the AV system developed by this author during parallel berthing of the container ship was not statistically significant for the reduction of maneuvering time. 2. In Scenario 2 for the general cargo ship: 1. The mean distribution of the resultant speed at the moment of the general cargo ship's contact with the fender is statistically different from the mean distribution of the same variable obtained for variants of passages using only visual observation and ECDIS and Pilot_max systems. The mean distribution of the resultant speed at the moment of the general cargo ship contact with the fender is not statistically different from the mean distribution of the same variable obtained for variants of passages using the Pilot_precise system. 2. The use of the AV system developed by this author during the diagonal berthing, using a spring line, significantly affects the reduction of resultant speed at the moment of the hull contact with the fender. 3. The mean distribution of maneuvering time differs significantly from the mean distribution of the same variable obtained for the variants using only visual observation and the ECDIS system. The mean distribution of maneuvering time is not statistically different from the mean distribution of the same variable obtained for the variants using the Pilot_max and Pilot_precise systems. 4. The use of the AV system developed by this author during the diagonal berthing, using a spring line, of the general cargo ship significantly affects the reduction of resultant speed at the moment of the hull contact with the fender. 3. In Scenario 3 for the sea ferry: 1. The mean distribution of the sea ferry distance from the assumed reference point is significantly different from the mean distribution of the same variable obtained for variants using only visual observation and the other tested systems. 2. The use of the AV system developed by this author during the berthing of the sea ferry significantly affects the reduction of the ship's hull distance from the assumed  
The mean distribution of the distance of the tow train contour from the assumed reference point, during the turning maneuvering of unberthing and turning, statistically differs from the mean distribution of the same variable obtained for the same variants using the Pilot_precise system. 2. The use of the author's AV system during the unberthing and turning of the tow train significantly affects the reduction of the distance of the tow train contour points from the assumed reference point of the mean and maximum maneuvering area. The assessment partly verifies the veracity of the hypothesis that the use of AV-based navigational information display in the decision support system will increase the efficiency and safety of navigation during maneuvering in a restricted area. The analysis of the test results has shown that the use of AV-based navigational information display in the decision support system in most of the maneuvers performed has a significant impact on the safety of navigation in a restricted area.