Hull Monitoring System
Measure, Monitor and Avoid...Bow Emergence, Slam, and Excessive Hull Flexure
With Real-Time Graphic Displays, Charts, Tables and Reports
Increase Vessel Operating Safety While Reducing Structural Damage
HMS is an intrinsically safe system that displays quantitative data about
ship motion in intuitively clear graphic and tabular formats. At sea,
deck officers navigate more efficiently, minimizing structural damage.
On land, post-processing re-creates any voyage, quantifies its slams and
stresses, looks for correlations, evaluates fatigue damage and helps operators
plan safer routes.
Real-Time Displays Help Cut Structural Repair Costs
Ship owners' cost and frequency of repairs are a direct result of metal
fatigue caused by hull stresses, bow slamming and vibration. HMS
continuously informs wheelhouse watch personnel of deck stresses, bow
pressure and accelerations. The system sounds alarms as critical limits are
approached; even shows the effectiveness of the ship's latest maneuvers.
Animated and real-time displays for: wind and wave velocities,
pitch, roll, accelerations, bow pressure, deck stress, course,
speed, and slam probability.
Continuous 60-second time-history plot for any two data channels.
Ship's position traced against a route map with UTC noon marks.
Displays the ship's real-time power consumption. This allows
officers to see how changes in course and speed affect fuel economy.
Four-hour time-history bar chart indicating five-minute average and
maximum value for: pitch, roll, deck stress, bow acceleration and
Displays tide and current information for port. Also displays
Post-Voyage Reports Help Optimize Operating Procedures
Data analyses enhance deck officers' understanding of the ship's dynamic
behavior under various loading conditions, and what to expect by season
and route. Having this information allows operators to optimize at-sea
procedures for safety and structural integrity by answering questions
- What was the maximum roll, pitch angle etc. encountered last winter?
- Which routes are structurally critical in which seasons?
- What is the current rate of fatigue damage for various struct
- What is the probability of structural damage given the number
of bow emergences since the last shipyard period?
Flexible Component Installation
In one day, the minimum HMS configuration can be installed and activated
with wireless, radio-linked data transmission to the deck-house. Alternatively,
the entire system can be installed during an appropriate shipyard period.
Standard Equipment Includes:
- Intel-based Command Center
- 16 or 32 data acquisition channels with 10Hz polling
- Bow accelerometer to measure vertical motion
- Bow bottom pressure transducer to measure emergence and slam
- Mid-deck strain gauges to measure stress
- Inclinometers to measure pitch and roll
- Utilizes ship's engine, anemometer and GPS data
- Marathon Oil
- Polar Tankers
- Alaska Tanker Company