ABC Diving® Ltd.

International Cy
Registered in Port-Vila P.O. Box 3242
VANUATU South Pacific
Ph: +678 5684277 or 7100230

~ COMMERCIAL DIVING ~

Rudder stock: check stock for cracks and connection to rudder for loose or missing bolts or nuts.
Upper support housing: look for obvious wear, loose or missing bolts or nuts, the security and effectiveness of locking devices and any missing components. The space between the upper bearing gland and rudder should be free of debris.
Top portion of rudder: check for missing filling plugs, corrosion and damage.
Inspection plates: check for security of all bolts or nuts, and that no gasket material is hanging loose or parts of gaskets missing.
Sacrificial anodes: check degree and coverage of pitting. Measure pits and report average depth and maximum depth of pitting. Check and report percentage waste. Take three circumferencial and one length measurements to compare with the original (as new) size. Check if securely attached. Check securing lugs for corrosion or if in good condition. Check and report if anodes are secured by bolts, welded lugs or any other means.
Lower portion of rudder: check drain plugs, lower inspection plate(s), anodes and lower bearing.
NB. If rudder can be moved, with diver on propeller shaft and clear of movement, the rudder should be set amidships and position checked for alignement; then hard to port/starboard and the full travel checked and measured in degrees if possible. Measure rudder tracking edge to prop boss when rudder hard to port hand hard to starboard.

Check both for damage, locking devices, and that no significant gap exists in any joints.
Check each blade for chipping, cracks, distorsion, 'polishing'. If any damage has occured, take detailed measurements of all dimensions of any damage. Report with a sketch and carefully note which blade it is on in that particular position.
If variable pitch, check each blade's securing flange, nuts and locking devices. Check that no debris, i.e. wire, rope, nylon, etc., has intruded on fittings. With diver well clear of propeller, but within good visibility range, check each blade as it is 'feathered'. Then turn from full-ahead position to full-astern. Mesure this angle if practicable.
Report on all blades in sequence.
Check ropeguard for security, fixtures and securing bolts and locking devices. Check that no line or wire rope has entered the gap between guard and propellor.
If 'A' brackets are fitted, check for damage and any cracks, particularly the welds or attachment devices to both hull and shaft housing.
Clear ropes and debris and check main stern gland(s) for wear or damage.
Check all bearings and shafts for oil leaks.