• Bunker Stem Investigative Surveys
• Charter On/Off Hire Surveys
• Bunker Investigative Surveys
• Serve as Protective Surveyor / Superintendent during Bunkering
• Sludge Disposal / Discharge Surveys
• 'Bad' Bunker Dispute Claims
• Overconsumption Claims
• Voyage underperformance Claims
• Post-Bunker Dispute Claims
• Cappuccino Bunker Investigations
Sigma is dedicated to offering quality marine surveying services to its principals and customers.