COMPANION TOOLS
Sail & wind
Plan using source-backed game values. Each entry retains its verification version.
Read the wind
100%
Sail force factor
0° headwind · 90° crosswind · 180° tailwind. This is the verified angular sail-force model, not speed or an arrival-time estimate.
| Sail coefficient | 0.0500 |
|---|---|
| Paddle coefficient | 0.2000 |
| Sail target magnitude | 0.05000 |
Coefficients are not m/s. Waves, mass, damping, rudder and acceleration change actual speed. Paddling applies a separate force; a zero sail factor does not mean the boat stops. Moder changes wind direction; no additional speed multiplier is assumed.
Verified against official game assets and assembly logic, Valheim 1.0.21.
QUICK ANSWERS
Frequently asked questions
Does the compass show boat speed?
It shows the verified dimensionless sail-force factor. Waves, mass, damping and acceleration determine actual speed. Paddling is a separate force and Moder changes wind direction.