Clearance Measurements & Surveys

Propulsion and steering performance depend on dimensions measured to hundredths of a millimetre — well before those dimensions turn into vibration, fuel loss, or class-survey non-compliance. Our underwater clearance measurement and survey services deliver those numbers afloat in Singapore anchorage, saving you the cost of a drydock visit. This category covers the precision afloat measurements classification societies expect: tailshaft clearance measurements (top and bottom) for propeller shaft bearing wear, rudder pintle clearance checks against class-specified limits, and sea bed surveys for offshore projects, jetty construction, pipeline routing, and pre-dredge baselines. Every measurement is witnessed where required, documented with HD video evidence, and delivered in a report format accepted by ABS, DNV, Lloyd’s Register, BV, and ClassNK surveyors. Our dive and survey teams operate from certified commercial diving spreads, with backup ROV capability for poor-visibility conditions. Water depth, current, and visibility at Singapore’s anchorages are our day job — work gets done efficiently regardless of conditions. Browse the posts for technique details, typical tolerances per class society, and scheduling guidance around Special Surveys and Intermediate Surveys. Contact our Singapore team for rate quotations.