All hands onboard

A BepInEx mod for Valheim that turns the ship's Slow speed into a real rowing minigame. Up to six players can take rower slots and push the ship by alternating L/R strokes in time with a metronome.

What it does

• Each ship type has rower slots (Karve 2, Longship 4, Drakkar 6, Raft none).
• In Slow mode, sitting on the ship lets you claim a slot.
• Alternate the left and right keys to row. Strokes are scored against a target interval:
  • PERFECT / GOOD / SLOW / TOO FAST / WRONG SIDE verdicts
  • Streaks of perfect strokes grant a tempo bonus, then a ship-wide Mastery speed bonus past 20 in a row
  • When several players row in phase, a Crew Sync bonus applies on top
• HUD widget in the lower-left (just above hp bar) shows L/R indicators, current streak, the ship's smoothed multiplier, and the latest verdict.

Install

1. Install BepInEx for Valheim.
2. Drop AllHandsOnboard.dll into <Valheim>/BepInEx/plugins/.
3. Launch the game once to generate the config file at <Valheim>/BepInEx/config/com.allhands.onboard.cfg.

All players in a session need the mod for slot/tempo sync to work.

Controls

Defaults (rebindable in the config):

• Keyboard: LeftArrow / RightArrow
• Gamepad: LT / RT (analog triggers, hysteresis-gated)

Input mode auto-detects but can be forced via Input.Mode.

Configuration

Generated on first run. Notable sections:

• [Rowing] - tempo gain, decay, speed cap, ZDO sync interval
• [Rhythm] - PERFECT/GOOD/SLOW/TOO FAST windows and bonuses, wrong-side penalty
• [Streak] - streak threshold, mastery min/max streak and factors
• [CrewSync] - bonus multipliers for 2 / 3 / 4+ rowers in phase
• [Hud] - HUD and metronome visibility, tick volume
• [Input] - keyboard keys, gamepad axes, mode override
• [Debug] - VerboseLogs (off by default; emits BepInEx Debug-level events when on)

Source code

GitHub