Maintenance and inspection with the ship still in the water

What we do below the waterline

On a ship, everything is done with the vessel in the water, with no drydocking. The same team also handles port structure work.

• 01Hull inspection with photo and video record
• 02General hull cleaning with a two-brush hydraulic machine
• 03Sea chest cleaning, internal and external
• 04Thruster cleaning, internal and external
• 05Propeller polishing with a hydraulic machine
• 06Sacrificial anode replacement and impressed current system support
• 07Plugging and unplugging
• 08Visual inspection with electrochemical potential measurement
• 09Fiber jacket installation for underwater pipeline protection
• 10Dredging, removal and placement of floodgates
• 11Foundation opening for pier construction
• 12Plate thickness measurement
• 13Underwater welding

… among others. Anchor repair, part recovery and the job that has no name yet: if it sits below the waterline, we will look at it.

Equipment

Hull polisher HPJ 40	Orbital hydraulic motor · 110 bar · 40 LPM displacement · stainless steel carcass
Hull polisher HPJ 41	Orbital hydraulic motor · 110 bar · 20 to 25 LPM displacement · stainless steel carcass
Polisher PHJ 20	3,500 rpm · 1.8 kW · 20 L/min oil flow · 110 bar
Brush ECA / GMF	1,700 rpm · naval plywood disk · carbon steel bristles · 380 mm
Soft brush	1,700 rpm · naval plywood disk · soft cable bristles · 380 mm
Soft mixed brush	1,700 rpm · soft and steel cable bristles · 380 mm
Two hydraulic hoses MHTP	Thermoplastic · 5/8 · 2.1/4 final gauge · polyethylene spiral coating
Triple hydraulic unit	Three-cylinder diesel engine · electric starter · carbon steel skid · 200 L tank
CCTV SVHD04	960 TVL camera · LED illumination
KMB 18 full face helmet	Two units, with Mersh Marine
Illumination and camera	Two sets · LED 1320 · CSHD 300 camera
Complete umbilical	Two complete sets · communication, light source and camera
Air tank RAC150	150 L · 250 psi
Diesel compressor	25 PCM · 200 psi