Ship Navigation Performance Data Processing for Varying Sea Conditions

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Solution Overview

Problem

Conventional data provided by ship manufacturers for navigation performance is limited to ideal conditions and cannot accurately account for varying draft, trim, wind, and wave conditions in actual sea navigation, leading to inaccuracies in fuel consumption and route optimization.

Innovation Solution

A data-processing device that acquires ship characteristic data and wind/wave state data to generate relationship data between propeller rotation speed, fuel consumption, navigation speed, load, and efficiency indicators, providing output data for optimal navigation planning and engine control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional navigation performance data from ship manufacturers is used, then data availability is ensured, but measurement precision deteriorates because the data is obtained under ideal conditions without wind or waves and cannot reflect actual sea conditions

Engineering Contradiction:

Improvenavigation performance data accuracyVSAvoidapplicability to varying sea conditions

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent changes the parameters of navigation performance data from ideal-condition data to actual-sea-condition data by incorporating wind/wave state data and draft condition data. The system generates relationship data that reflects actual navigation performance under varying sea conditions, transforming the data characteristics to match real-world operational environments.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces an intermediary data processing system that acquires ship characteristic data, wind/wave state data, and draft condition data, then generates relationship data indicating navigation performance. This intermediary system bridges the gap between manufacturer-provided ideal-condition data and actual sea navigation requirements.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If human interpretation and amendment of manufacturer data is performed, then adaptability to actual navigation conditions improves, but device complexity and time consumption increase due to the burden on shipping managers and ship operators

Engineering Contradiction:

Improvenavigation data applicabilityVSAvoidoperational complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a self-service system where the data processing device automatically acquires ship characteristic data, wind/wave state data, and draft condition data, then generates relationship data without requiring human interpretation or amendment. The system serves itself by automatically producing navigation performance data adapted to actual sea conditions.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent performs preliminary action by pre-acquiring ship characteristic data and pre-processing it into relationship data that indicates navigation performance under various sea conditions. This preliminary data preparation eliminates the need for time-consuming human interpretation during actual navigation planning.

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If human interpretation and amendment of manufacturer data is performed, then navigation planning can be conducted, but loss of time occurs due to the great burden on shipping managers and ship operators

Engineering Contradiction:

Improvenavigation planning efficiencyVSAvoiddata processing time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent replaces the mechanical system of human interpretation and amendment with an automated data processing system. The system uses computational methods to acquire ship characteristic data, wind/wave state data, and draft condition data, then generates relationship data automatically, substituting human cognitive processes with automated information processing.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements feedback by continuously acquiring wind/wave state data and draft condition data during navigation, then using this feedback to generate updated relationship data that reflects current sea conditions. This feedback mechanism ensures navigation performance data remains accurate and relevant throughout the voyage.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS10000262B2Data-processing device, program, recording medium and data-processing method for generation of data that indicates navigation performance of ship

Publication Date: 2018.06.19 NIPPON YOOSEN KABUSHIKI KAISHA

AI summary

A terminal device stores ship characteristic data that indicates a relationship between rotation speed and ship speed, and rotation speed and fuel consumption when a ship is navigated under various navigation conditions. If a user inputs data that indicates draft state and wind and wave state on a performance display screen displayed on the terminal device, the terminal device generates relationship data that indicates a relationship between rotation speed and ship speed, and rotation speed and fuel consumption when a ship is navigated under wind and wave states corresponding to the input data and each of a plurality of Beaufort states that are set in the terminal device in advance on the basis of the ship characteristic data. The terminal device displays a graph that displays the relationship between rotation speed, ship speed and fuel consumption for each of a plurality of navigation conditions using the relationship data.