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KONISHI TsukasaGraduate School of Maritime Sciences / Department of Maritime SciencesAssistant Professor
Research activity information
■ Paper- American Society of Civil Engineers (ASCE), Dec. 2023, ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, 9(4) (4)Scientific journal
- Elsevier BV, Feb. 2023, Reliability Engineering & System Safety, 109140 - 109140[Refereed]Scientific journal
- Faculty of Navigation, 2023, TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, 17(4) (4), 873 - 880Scientific journal
- Current stern lights can be used during night lookout to gauge the presence of an approaching vessel, but since the light emission range of the stern light is wide at 67.5° on each side, it is difficult to estimate the direction of travel of vessels with these types of stern lights. This study aims to investigate more effective ways to determine if a vessel is approaching, and utilized a questionnaire survey to see if the introduction and expansion of side passage lights, which are currently used on Ultra Large Container Vessels (ULCVs), would solve the problem of the current stern lights. Analysis of the survey results discovered that these side passage lights contribute to a more accurate estimation of the approximate heading in nighttime overtaking conditions, although the accuracy is lower than that in the daytime. Furthermore, based on the results of the questionnaire, if side passage lights are widely adapted, it is unlikely that confusion will arise in the future, even if side passage lights are widely used by other vessels besides container vessels.Japan Institute of Navigation, 2023, Transactions of Navigation, 8(2) (2), 63 - 72, English
- Japan Institute of Navigation, 2023, NAVIGATION, 223, 15 - 16, Japanese
- Japan Institute of Navigation, 2023, NAVIGATION, 223, 17 - 18, Japanese
- Feb. 2022, Journal of Navigation, 75(2) (2), 1 - 16, English[Refereed]Scientific journal
- Abstract Uncertainty in a complex socio-technical system, such as ship, is given. Yet, surprisingly, most of the ship operations were done without any significant problem. In this case, the ship officer as the operator plays an important role in maintaining ship safety. Human performance is unpredictable and varies on the condition. However, variation in human performance is more likely to produce acceptable outcomes than adverse outcomes. Therefore, this study aimed to determine how human variability performance in specific officers onboard contributes to successful ship operation. Evaluation of officer variability performance for establishing safety in everyday ship operation has been done using Functional Resonance Analysis Method (FRAM) in this study. FRAM is Safety-II based tool that provides concepts and models for safety analysis that use terms called function to describe system activities. An essential feature of FRAM is the mean that is necessary to explain the activity of a system in which the functions are mutually dependent. System activities are modeled in terms of how the system works to ensure that it performs systematically. Key functions of officer activities onboard are generated through observation in training ship Fukae-maru owned by Kobe University. As a result, FRAM could define how officer variability performance contributes to system propagation and create a safe ship operation.IOP Publishing, Jan. 2022, IOP Conference Series: Earth and Environmental Science, 972(1) (1), 012044 - 012044Scientific journal
- 各種船舶間航法適用の前提条件についての考察 : 漁ろうに従事している船舶の灯火を中心にCollisions between fishing vessels and other vessels lead to many dead or missing fishermen, and the impact on society is very large. According to Article 18 of the "Act on Preventing Collisions at Sea" (hereafter referred to as Prevention Law), vessels engaged in fishing are granted priority of navigation. As a prerequisite for this priority status, it is necessary to display lights and shapes specified by Article 26 of the Prevention Law. Vessels engaged in fishing often do not show up on radar, so it is very important for ship operators to display the required lights and shapes as a means for visual judgement of nearby vessels. Collisions of vessels engaged in fishing can occur when they do not display lights and shapes while at sea. Compounding this problem, it can be difficult for ship operators to determine whether to apply Article 18 of the Prevention Law, the fixed navigation law, or Articles 38 and 39 of the Prevention Law(1).This study examines the circumstances of vessels engaged in fishing that do not display legal lights and shapes, and also investigates the problem of the prerequisites for vessels engaged in fishing. Finally, differences of applicable navigation regarding these rules and regulations are also taken into consideration.日本航海学会, Jul. 2021, 日本航海学会論文集, (140) (140), 8 - 17, Japanese[Refereed]Scientific journal
- Japan Institute of Navigation, Dec. 2020, The Journal of Japan Institute of Navigation, 143(0) (0), 18 - 30, Japanese[Refereed]Scientific journal
- National Institute of Occupational Safety and Health, 2018, Journal of Occupational Safety and Health, 11(1) (1), 39 - 46, Japanese
Marine casualties are relatively small in number compared to other industrial accidents, but they cause enormous damage. Ship crews are continuously working in shifts, 24 hours a day, making the ship a place to live as well as work. Ideally, marine casualties should not occur from occupational hazards. To prevent casualties and ensure safe voyages, it is important to confirm ship positions using landmarks. It can be difficult for students, however, to identify landmarks by matching landscape views and nautical charts. Students have various levels of experience, proficiency, and training with these skills. Therefore, it is necessary to consider adapting teaching methods to efficiently correlate with individual student characteristics. This paper examines students' abilities concerning their sense of direction and identifying landmarks in maritime transportation, using sketch map drawing and a questionnaire. The results suggest that students' sense of direction was an important factor. Moreover, the need for new training methods corresponding to students' sense of direction was also highlighted.
- Japan Institute of Navigation, 2018, The Journal of Japan Institute of Navigation, 138, 12 - 19, Japanese
There are many cases when a fishing skipper dies by a collision between a fishing vessels and a merchant vessel. Act on Preventing Collision at Sea require vessels to keep a proper lookout at all times. However, as fishing vessels can't always employ an Officer of the Watch(OOW), bad lookouts are the cause of many collisions.
This paper examined cases when vessels didn't keep proper look out between fishing vessels and merchant vessels in the judgment of Japan marine accident inquiries. As a result of the examination, it was clear that there was "prejudice" in the stage before "risk of collision" in both vessels.
This paper pointed out the problems of "prejudice," and also suggested to get measures for accidents according to prejudice.
[Refereed] - As fundamental research of the operation of autonomous ships on the monitoring screen on shore, this paper focused on the differences in collision avoidance judgments based on various information sources, specifically via radar and via visual confirmation. Experiments were carried out using a ship-handling simulator with 14 seafarer trainees who had acquired the same level of maritime knowledge but had no actual experience at sea. Two experiments were carried out: a simple situation with one target ship appearing, and a complex situation where several targets appeared. The judgments in the complex situation showed that radar decision timing was quicker than visual decision timing. On the other hand, the simple situation showed no difference in course alteration and timing. Further results indicated that evaluation of the involved ships in the situation and the back ground of judgments varied depending on information sources. It is suggested that evaluation of the involved ships and the back ground of judgments may lead to differences in collision avoidance judgments.Japan Ergonomics Society, Dec. 2017, The Japanese Journal of Ergonomics, 53(6) (6), 205 - 213, Japanese[Refereed]
- Japan Institute of Navigation, Mar. 2017, Transactions of Navigation Online ISSN : 2189-5511, 2(1) (1), 1 - 13, English[Refereed]Scientific journal
- Japan Institute of Navigation, 2017, The Journal of Japan Institute of Navigation, 137, 15 - 26, Japanese
Rule17(a)(ii) was introduced by a legal revision in the 1972 COLREGs. The 1960 COLREGs required the stand-on vessel to keep her course and speed until compulsory action was required by the stand-on vessel.
In the 1972 COLREGs, the stand-on vessel could act at an earlier stage under Rule17(a)(ii); if the stand-on vessel was freed from strict obligation, she could take action in order to avoid immediate danger. As Rule17(a)(ii) is permissive, however, the new Rule17 still does not inform the OOW at which moment his right is replaced by an obligation to act.
This paper examined the judgement of marine accident inquiry to which Article17(2) was applied, and also pointed out the problems of COLREGs Rule17(a)(ii) via interpretation of the law.
[Refereed] - Japan Institute of Navigation, 2017, The Journal of Japan Institute of Navigation, 137, 37 - 49, Japanese
The word "innocuously passing" is used daily in Japan marine accident inquiry. The phrase "innocuously passing" means that there is no "risk of collision". When a collision was judged to arise from an "innocuously passing" situation, Rule 2(special circumstances of the case) was applied. This occurrence raises a problem: OOW cannot judge whether a situation is "innocuously passing" or a "risk of collision" immediately before a collision. If Rule 2 applies, judgement dictates that the action as Rule 17a(ii) and Rule 17b of the stand-on vessel has caused the collision.
This paper examines the judgement of marine accident inquiries when the "innocuously passing" designation was applied, and also highlights inherent problems with the concept "innocuously passing."
[Refereed] - Japan Institute of Navigation, 2017, NAVIGATION, 201, 3 - 14, Japanese[Refereed]
- Japan Institute of Navigation, 2017, NAVIGATION, 201, 17 - 22, Japanese[Refereed]
- Lead, Japan Institute of Navigation, 2014, NAVIGATION, 188, 101 - 101, JapaneseScientific journal
- Japan Institute of Navigation, 2024, NAVIGATION, 227, 12 - 12, Japanese
- 2023, 海洋人間学雑誌(Web), 12(2) (2)実習授業におけるリーダーシップに関する一考察
- Japan Human Factors and Ergonomics Society, 30 Jul. 2022, The Japanese Journal of Ergonomics, 58(Supplement) (Supplement), 1E2-03 - 1E2-03, Japanese
- 2022, 海洋人間学雑誌(Web), 11(2) (2)操船者の緊急対応までの行動に関する研究
- 2022, 海洋人間学雑誌(Web), 11(2) (2)学生の自動運航船社会に対するイメージ
- 2020, 日本航海学会講演予稿集(Web), 8(1) (1)海難審判における「新たな衝突の危険」の適用について
- 2018, 日本人間工学会関西支部大会講演論文集, 2018海上交通におけるランドマーク特定方法の違いについて
- 2018, 日本航海学会講演予稿集(Web), 6(2) (2)各種船舶間航法適用の前提条件についての考察-漁ろうに従事している船舶の灯火を中心に-
- 2017, 日本航海学会講演予稿集(Web), 5(2) (2)「思い込み」が見張りに及ぼす影響についての一考察-漁船と漁船以外の船舶の衝突事故を中心に-
- 2017, 日本航海学会講演予稿集(Web), 5(1) (1)「新たな衝突のおそれ」適用事例における「無難に航過する」の問題について
- 2017, 日本航海学会講演予稿集(Web), 5(1) (1)海上衝突予防法第17条第2項についての一考察
- 2017, 日本人間工学会関西支部大会講演論文集, 2017操船シミュレータを用いた教育効果の検討について
- 2017, 日本人間工学会関西支部大会講演論文集, 2017海上交通における地形の把握について
- 2016, 日本人間工学会関西支部大会講演論文集, 2016簡易操船シミュレーターを用いた訓練生の他船状況認識の変化について
- Japan Ergonomics Society, 2016, The Japanese Journal of Ergonomics, 52(Supplement) (Supplement), S408 - S409, Japanese
- Japan Ergonomics Society, 2016, The Japanese Journal of Ergonomics, 52(Supplement) (Supplement), S410 - S411, Japanese
- 2015, 日本人間工学会関西支部大会講演論文集, 2015船舶運航シミュレータにおける学生の船橋内での行動について
- 2015, 日本人間工学会関西支部大会講演論文集, 2015船舶交通における学生の他船に関する状況認識について
- 2014, 日本人間工学会関西支部大会講演論文集, 2014船舶運航シミュレータにおけるチェックリスト課題が覚醒水準に与える影響
- 2013, 日本人間工学会関西支部大会講演論文集, 2013船舶運航シミュレータにおける会話の影響:覚醒水準に着目して