# Ship Dynamics 6dof

> 6DOF ship dynamics, equations of motion, seakeeping analysis, and natural frequency calculations

- Skill: `vamseeachanta/ship-dynamics-6dof` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/ship-dynamics-6dof`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/ship-dynamics-6dof/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/ship-dynamics-6dof

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# Ship Dynamics 6Dof

## When to Use This Skill

Use 6DOF ship dynamics when:
- **Equations of motion** - Set up and solve 6DOF coupled equations
- **Natural frequencies** - Calculate natural periods for all DOFs
- **Seakeeping analysis** - Predict vessel motions in waves
- **Coupled dynamics** - Analyze roll-heave-pitch coupling
- **Time-domain simulation** - Integrate equations of motion
- **Frequency-domain analysis** - RAO-based motion prediction

## Resources

- **Principles of Naval Architecture**: SNAME
- **Ship Hydrostatics and Stability**: Adrian Biran
- **Seakeeping: Ship Behaviour in Rough Weather**: A.R.J.M. Lloyd
- **DNV-RP-C205**: Environmental Conditions and Environmental Loads
- **ISO 2631-1**: Mechanical vibration and shock

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**Use this skill for all 6DOF dynamics analysis in DigitalModel!**

## Sub-Skills

- [1. 6 Degrees of Freedom (+1)](1-6-degrees-of-freedom/SKILL.md)
- [3. Natural Frequencies and Periods (+1)](3-natural-frequencies-and-periods/SKILL.md)
- [5. Time-Domain Simulation](5-time-domain-simulation/SKILL.md)
- [6. Seakeeping Analysis](6-seakeeping-analysis/SKILL.md)
- [Example 1: Full 6DOF Simulation](example-1-full-6dof-simulation/SKILL.md)
- [Example 2: Natural Frequency Sensitivity Study](example-2-natural-frequency-sensitivity-study/SKILL.md)