Ship maintenance

HULL CLEANING / GROOMING

TYPICALLY, A BIO-FOULING LAYER CAN START FORMING OF THE SUBMERGED PART OF HULL WITHIN 2 TO 3 HOURS AFTER EXPOSURE AND WITH THE PASSAGE OF TIME IT CAN FORM DIFFERENT TYPE OF MARINE GROWTH.
SOME TYPICAL TYPES OF MARINE FOULING ARE:

SOFT FOULING

ALGAE
SLIME
TUBE WORMS
SEA WEED
CALCAREOUS GROWTH

HARD FOULING

ACORN BARNACLES
MUSSELS
OYSTERS
PIN HEAD BARNACLES

PROPELLER SUPER POLISHING

THE PROPELLER IS USUALLY AN UNPAINTED AREA LOCATED AT THE STERN SO IT ACCUMULATES THE MARINE BIOFOULING QUICKER THAN THE HULL WITH THE PASSAGE OF THE TIME AND USUALLY RESULTS IN EXCESSIVE ENGINE SLIP. SHIP OWNER AND MANAGERS ACTIVELY ARRANGE PROPELLER SUPER POLISHING AFTER EVERY SIX MONTHS IN ORDER TO INCREASE THE EFFICIENCY OF THE MOVING VESSEL.

HULL CLEANING / GROOMING

Typically, a Bio-Fouling Layer can start forming of the Submerged Part of Hull within 2 to 3
hours after exposure and with the passage of time it can form different type of Marine Growth. Some Typical types of Marine Fouling are:

SOFT FOULING

Algae
Slime
Tube Worms
Sea Weed
Calcareous Growth

HARD FOULING

Acorn Barnacles
Mussels
Oysters
Pin Head Barnacles

PROPELLER SUPER POLISHING

The Propeller is usually an unpainted area located at the Stern so it accumulates the Marine Biofouling quicker than the Hull with the passage of the time and usually results in excessive Engine Slip. Ship Owner and Managers actively arrange Propeller Super Polishing after every Six Months in order to increase the Efficiency of the moving vessel. NSA Subsea Service’s professionally trained and experienced divers use hydraulic hand motors fitted with various coarse ‘’3M’’ polishing pads. The final surface roughness is a Grade ‘’A’’ on the Rupert’s Comparator Scale. A Detailed Technical report will be submitted after completion.

NEWZEALAND / AUSTRALIAN STANDARD HULL GROOMING

We offers in depth Hull Cleaning of the Vessels as per the “Craft Risk Management System (CRMS)” Guidelines for the Ships arriving in New Zealand and similarly for Australia as well. We can also offer attendance of a Bio-Fouling Inspector who can witness the Hull Cleaning and issue a statement which is deemed necessary for vessels to enter Australian Ports.