Hull Roughness Gauge

TQC has made the next evolutionary step in hull roughness surveys. Surpassing the industrial standards with an easy to operate 4-way directional push button, graphical representations, storage of data in multiple batches and survey reports in Microsoft Excel®. The whole system fits into a small sized waterproof rugged casing that is allowed as carry on travel luggage and benefits your overseas travel plans.

Controlling the roughness of a ship’s hull plays an important role in the operating costs of a vessel. The roughness of a ship’s hull increases mainly due to corrosion, pitting, plate undulation, mechanical damage, dry spray and above all bio fouling. Proper maintenance and the correct application of high-end anti-fouling coatings reduce the hydrodynamic effects and will lead to significant savings on fuel consumption and CO2 emissions.

The hull roughness is measured during in-docking and out-docking. The Hull Roughness Gauge measures the AHR value (Average Hull Roughness) of sea going vessels. AHR is the ‘mean’ of all the vessel’s hull roughness readings and is the measure against which ship’s performance is correlated.

The TQC Hull roughness Gauge consists of a Control unit and a Sensor unit.
The Hull Roughness Control unit can be operated with just one hand, a 4-way directional push button operates an intuitive menu on a large illuminated display. The neck strap keeps the users' hands free when required.

The Sensor unit is equipped with three non-slip wheels and a carbide tipped stylus and is moved over the ship’s hull in a horizontal way collecting series of measurements. A set of LED’s indicate the status of the instrument so operation is possible without observing the control unit.

Statistics, time/date and location of each series and the average hull roughness are automatically calculated and stored in the Control unit. Using the supplied USB-cable and software you instantly create inspection reports in Microsoft Excel. Your own company logo and or -details can be incorporated to restyle your reports.

Accuracy: +/- 5 microns or or Memory: Enough for 4 complete surveys done both in- and out-docking, totally over 10.000 readings
Location storage: Simply point and click the hull location in the displayed graphical representation of the ship’s hull
Units: Microns
Speed: 50 mm/s, with speed indication LED in the Sensor unit
Interface: USB serial to PC connection
Power supply: 4 AA type Alkaline Cells, available worldwide
Calibration certificate: included



Art. No. DC9000

TQC Hull Roughness Gauge

More Products


The TQC DewCheck 4 - Dewpoint Meter (DPM)/ Dewmeter is an extremely versatile dewpoint meter to measure and record all climate parameters required to treat surfaces. This easy to use and robust dewmeter conforms to ISO 8502-4 & ASTM D3276-07 and measures the relative humidity (%RH), ambient temperature (Ta) and surface temperature (Ts) and calculates the dewpoint temperature (Td) and the difference between the dewpoint temperature and the surface temperature (ÄT). The difference between the surface temperature and dewpoint temperature indicates the optimal climate conditions for painting. All parameters can be stored in the dewmeter's memory, tagged with a date and time. For communication between DewCheck 4 dewmeter and a PC the DewCheck dewmeter USB cable is standard supplied. To analyze the data the DewCheck 4 comes with the special Ideal Finish Analysis software. This software is the most advanced temperature and humidity monitoring software package for Dewpoint Meters available today. It offers user friendly reporting functions for standard production work as well as advanced calculations for in depth analysis of the climate parameters prior to coating. Detailed graphic representations and customizable reports help to make the right decisions. Visit the website for an interactive demo.


The TQC Pretreatment Test Kit is especially composed to control all relevant parameters during the pretreatment of steel prior to painting. The PTK is available as BASIC KIT and FULL KIT. The strong double walled suitcase holds a smart selection of inspection tools and measuring devices to assist the paint inspector on a survey to inspect blast cleaned steelwork. The BASIC KIT contains a Bresle Test for surface and blast media measurements, a Dust Test kit and Telescopic inspection mirror. The FULL KIT has a large number of extra items as described in the datasheet. It is also possible to make a selection out of the optional items. The quality of correct pretreatment of a surface prior to application of the coating is essential to ensure the quality of the coating and that its optimum lifetime is achieved.  PTK Pretreatment Test KIT  Basic KIT  Full KIT   SP7310 TQC Bresle test ✓ ✓  SP3200 Dust Test Kit ✓ ✓  LD3025 Paint Inspectors Mirror ✓ ✓  DC7100 DewCheck   ✓  SP1560 Profile gauge   ✓  SP3600 Spring Loaded Roller   ✓  LD3020 ISO8501-1:2007 The Rust Grade Book   ✓  LD2040 Surface Roughness Comparator   ✓  LD7290 UV-Inspection Flashlight,   ✓  SP3000 Coating Multitester   ✓ Standards: ISO8502-6 and 9, IMO MSC.215(82), IMO MSC.244(83), ISO8502-3, ISO 8502-4, BS 7079-B4, US Navy NSI 009-32, US Navy PPI 63101-000, ASTM D4417 – B, ISO 2808-3, ASTM D4138, ISO8501-1:2007, ISO 8503 part 1and 2, ASTM D 4417 Method A, ASTM E2501, ISO 2409 :2003 and ASTM D3359.


TQC Ship Propeller Roughness Comparators to the estimate the surface roughness by both touch and sight. The TQC Ship Propeller Roughness Comparators are developed for the specific profiles related to the condition of ships propellers over the life of the propeller. The TQC Ship Propeller Roughness Comparators are available in two models. Model LD2041 is the superintendent’s version for use in drydock or office. LD2042 is the Diver’s version for underwater use. Each Ship Propeller Roughness Comparator have 6 specimens of Ship Propeller Blade surfaces in various conditions, Each Ship Propeller Roughness Comparator have 6 specimens of Ship Propeller Blade surfaces with profiles varying from Ra 1-30 µm, Rz 6-180 µm. TQC Ship Propeller Roughness Comparators are also supplied with guidance on the report for Propeller Blades.