# Orcaflex Installation Analysis Reference Elevation File

> Sub-skill of orcaflex-installation-analysis: Reference Elevation File (+2).

- Skill: `vamseeachanta/orcaflex-installation-analysis-reference-elevation-file` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/orcaflex-installation-analysis-reference-elevation-file`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/orcaflex-installation-analysis-reference-elevation-file/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/orcaflex-installation-analysis-reference-elevation-file

---


# Reference Elevation File (+2)

## Reference Elevation File


Contains the initial Z positions for all objects:

```yaml
# models/elevation_reference.yml

6DBuoys:
  Subsea_Structure:
    InitialZ: -50.0      # Initial elevation
    InitialRotation3: 45  # Initial rotation (deg)


*See sub-skills for full details.*

## Delta Elevation Application


For each `delta_elevation`:
1. **6DBuoys**: `NewZ = ReferenceZ + delta_elevation`
2. **3DBuoys**: `NewZ = ReferenceZ + delta_elevation`
3. **Line EndBZ**: `NewEndBZ = ReferenceEndBZ + delta_elevation`
4. **Line Length**: `NewLength = ReferenceLength + |delta_elevation|`

## Crane Wire Extension


As structure lowers, crane wire extends:

```python
# For each delta_elevation
new_wire_length = reference_length + abs(delta_elevation)
```