1. Access the Software

• Open the S-QMACS application in a modern browser — no installation, no command line.
• Download the User Manual from the same page if you need the full reference.
• Enter the login email and password from your activation email, then click Login.
• Paste your activation token and click Activate.
• Check the licence expiry date shown in the header.

2. Enter Main Inputs

• Mooring line type, diameter, breaking strength and weight in air.
• Water depth, line length and fairlead or softpin reference.
• Material density, seawater density and seabed friction factor.
• Acceptance clearance: vertical clearance to the asset and, where relevant, the required minimum.

3. Add Buoys and Assets

• Buoy: station along the line, net uplift, dry weight, height, optional diameter and pennant length.
• Asset: type (pipeline or sub-sea structure), horizontal distance from fairlead, crown height above seabed and width / OD.
• Asset class plus the line crosses asset flag decide the anchor-to-asset rule (250 m crossing, 150 m not crossing, 300 m structure).
• Check coordinates and direction convention before running.

4. Add Tension Cases

• Input the required fairlead tension cases.
• Run several cases to identify the governing clearance or touchdown condition.
• Compare low, normal and high tension behaviour where relevant.

5. Review Analysis Results

• Anchor radius from fairlead and touchdown distance.
• Grounded laydown — stretched and unstretched.
• Vertical clearance to each asset, plus anchor-to-asset clearance against the governing rule.
• Buoy submergence and effective uplift; anchor vertical uplift and uplift angle against the 2° limit.
• Line tension at anchor and at fairlead.

6. Reading the Case State

Clearance is reported pass or fail against the configured criterion, with the margin shown. The case itself carries a state: OK when every check is inside its limit, NOT ACCEPTABLE when a limit such as the anchor uplift angle is exceeded, CONDITIONAL when the solver cannot represent mid-span seabed contact or lift-off and the case needs multi-contact verification, and INVALID when the calculation itself cannot be trusted. A conditional or invalid case is not an approval.