Hull Monitoring and Assistant Decision-Making System (Hm)

(b) In addition to 2.3.2, the following documents are to be kept onboard the ship:

(i) Documents related to hull and deck machinery inspection and maintenance schemes.

2.4.8 Survey and test

(a) Prior to completion of construction of ship, the initial survey at least includes the following items:

(i) Examining the approval certificate of system software.

(ii) The systems for hull and deck machinery inspection and maintenance schemes have been installed on board the ship and operate normally.

(iii) General inspection items, critical areas and inspection interval of hull inspection and maintenance scheme satisfy requirements.

(iv) Personnel carrying out hull and deck machinery inspection and maintenance on board the ship have been trained by the Society or an organization accepted by the Society.

(b) The annual/intermediate/special survey is at least to include the following items:

(i) The information specified by above 2.4.7(b) is to be kept on board the ship.

(ii) The thickness data of structural members and renewal history recorded in the hull database are consistent with practical conditions.

(iii) The analysis report of hull thickness measurement data satisfies the requirements of above 2.4.5(c).

(iv) Personnel carrying out hull and deck machinery inspection and maintenance on board the ship have been trained by the Society or an organization accepted by the Society.

(v) Witnessed by the Surveyor, personnel on board the ship randomly select at least two ballast tanks for internal inspection, correctly determine the coating and structural conditions of the structura l area under inspection and correctly enter the identified problem and assessed grade into the computer system.

(vi) The records in the computer system of hull and deck machinery inspection and maintenance scheme are complete and consistent with practical conditions.

2.5 Hull Monitoring and Assistant Decision-Making System (Hm)

2.5.1 General requirements

(a) The hull monitoring and assistant decision-making system collects, stores, analyzes and displays data such as hull structural stress, ship motion, ship loading, sea state, course and speed, which gives warning in case the change of such data exceeds the preset critical value and provides assistant decision-making on operation of ship.

(b) The hull monitoring and assistant decision-making system is to include the following functions:

(i) Collecting and monitoring important parameters related to the safety of hull;

(ii) Storing collected data;

(iii) Carrying out calculation and abnormal analysis in accordance with the data collected by the monitoring system;

(iv) Capable of giving alarms in a timely manner in case the analytical result is abnormal;

(v) Providing decision-making suggestions on ship operation in accordance with alarm parameters;

(vi) Analyzing and recording sea state information and navigation parameters by link to the loading computer, gyro-compass and anemorumbometer, etc.

(c) Hull monitoring system is to comply with appropriate techniques or recognized standards accepted by the Society.

CHAPTER 2 SMART HULL 2.5 Hull Monitoring and Assistant Decision-Making System (Hm)

2.5.2 Parameter monitoring

(a) The following data are to be obtained from hull monitoring:

(i) Sea environment data, e.g. wind force, wind direction, wave;

(ii) Ship navigation parameters, e.g. course, speed;

(iii) Ship motion and acceleration, at least including pitch, roll and heave;

(iv) Ship floating condition, including draught of bow, midship and stern (port and starboard).

(b) Hull structural monitoring parameters normally including the following according to the stress distribution feature of ship types:

(i) The longitudinal strength of the hull structure;

(ii) Stress in the critical structural areas;

(iii) Temperature of the structural members affected by high or low temperature;

(iv) Bow slamming pressure (for applicable ship types);

(v) Liquid sloshing in tanks (for applicable ship types);

(vi) Structural stress of ice belt region of ice-reinforced ships;

(vii) Relevant monitoring parameters may be determined or further added in accordance with practical conditions of ship and safety needs.

(c) Ship loading state is to be obtained from hull monitoring, normally including:

(i) Cargo hold loading volume (where applicable);

(ii) Ballast tank loading volume (where applicable);

(iii) Fuel oil, fresh water.

2.5.3 Assistant decision-making

(a) Based on alarms from hull monitoring during navigation, cargo loading and unloading at docks and ballast water exchange, hull monitoring and assistant decision-making system is to be capable of providing appropriate assistant decision-making. Normally the following requirements are to be considered:

(i) during navigation, monitoring the hull’s:

(1) longitudinal strength;

(2) local strength (including critical structural areas) strength ;

(ii) during cargo loading and unloading at docks and during ballast water exchange:

(1) carrying out ship stability calculation (or obtain it from the loading instrument);

(2) monitoring the hull’s longitudinal strength ;

(iii) In case of an abnormal situation, an alarm is to be timely activated, cause analysis will be carried out and appropriate operational suggestions will be provided, such as to adjust ballast water, loading/unloading, course, speed, etc. so as to ensure that the ship's longitudinal strength and stability are in safe condition;

(iv) Relevant safety assessment and analysis and assistant decision-making requirements may be added in accordance with practical conditions of ship and safety needs.

2.5.4 Plans and documents

(a) In addition to 2.3.2 and 2.4.7, the following plans and documents are to be submitted to the Society for approval:

(i) Arrangement of sensors.

CHAPTER 2 SMART HULL

2.5 Hull Monitoring and Assistant Decision-Making System (Hm)

(b) In addition to 2.3.2 and 2.4.7, the following plans and documents are to be submitted to the Society for

(c) The following documents are to be kept onboard:

(i) The operating manual of hull monitoring and assistant decision-making system, which is at least to include description of the following:

(1) operation;

(2) setting and calibration of sensors and the system;

(3) failure identification;

(4) repair;

(5) system maintenance and functional tests (showing testing methods for the components and the system and what is to be observed during tests);

(6) explanations of test results.

(ii) Maintenance and calibration log of hull monitoring and assistant decision-making system.

2.5.5 Survey and tests

(a) Prior to completion of construction of the ship, the initial survey for hull monitoring and assistant decision -making system is at least to include the following items:

(i) Confirming that relevant plans have been examined;

(ii) Confirming that system hardwares (including sensors) are furnished with relevant certificates;

(iii) Confirming that software systems are approved;

(iv) After completion of installation of the system and equipment, survey and test are to be carried out in accordance with testing procedures to verify system function and effectiveness.

(b) During annual/intermediate/special surveys, at least the following items are to be examined for the hull monitoring and assistant decision-making system:

(i) Examining whether the system operates effectively;

(ii) Examining the detailed working record of the system;

(iii) Examining the repair record of system equipment;

(iv) Confirming that the historical and analytical data are complete and carrying out random examination of report contents;

(v) Confirming that operators are familiar with the hull monitoring and assistant decision-making system and confirming the implementation condition;

(vi) Examining and confirming that relevant instrumentation of the hull monitoring and assistant decision-making system has been calibrated in accordance with specified procedures and plans.

(c) In case of any fault of the hull monitoring and assistant decision-making system, or any damage, repair or renewal of equipment, or any major change to the means of monitoring, the owner or ship management company is to apply for an occasional survey.

CHAPTER 3 SMART MACHINERY