This error occurs when:

• • • A vessel is initially created as a Vertical Vessel on Legs or Brackets, and
    • The user later attempts to add a skirt or convert the vessel to a Vertical Vessel on Skirt with anchoring.

In AutoPIPE Vessel, the support type is a fundamental property that is fixed at the time of vessel creation.
Attempting to introduce a skirt to a vessel originally defined as leg- or bracket-supported creates an unsupported and inconsistent model configuration, which triggers Error 695.

---

Technical Explanation

• • • AutoPIPE Vessel internally classifies vessels based on their initial support selection.
    • A Vertical on Legs/Brackets vessel and a Vertical on Skirt vessel are treated as different vessel types, with different assumptions for:
      • Load paths
      • Stress calculations
      • Code compliance checks
    • Changing the support type to a skirt after creation is not supported, and the software correctly flags this as an invalid input condition.

---

Resolution

Changing a vessel from Legs or Brackets to a Skirt-supported configuration after creation is not recommended and not supported.
Only the following support-type changes are supported in AutoPIPE Vessel:

• • • • ✅ Legs ↔ Brackets
      • ✅ Saddles ↔ Legs / Brackets

Any conversion to or from a skirt must be defined during initial vessel creation.

---

Workaround

To avoid or resolve Error 695, use one of the following workarounds:

1. 1. 1. 1. Recreate the vessel with the correct support type:
            • Start a new vessel model.
            • Select Vertical Vessel on Skirt with Anchoring during the initial creation process.
            • Re-enter all geometry, material, load, and design data.
         2. not add a skirt to an existing leg- or bracket-supported vessel:
            • Skirts cannot be retrofitted through input data changes.
         3. Use supported support conversions only:
            • Convert between Legs and Brackets, or
            • Convert Saddles ↔ Legs / Brackets, if design intent allows.