diff --git a/pkg/rove/command_test.go b/pkg/rove/command_test.go
index f55c6cb..d73b25c 100644
--- a/pkg/rove/command_test.go
+++ b/pkg/rove/command_test.go
@@ -3,6 +3,7 @@ package rove
 import (
 	"testing"
 
+	"github.com/mdiluz/rove/pkg/maths"
 	"github.com/mdiluz/rove/proto/roveapi"
 	"github.com/stretchr/testify/assert"
 )
@@ -48,17 +49,93 @@ func TestCommand_Turn(t *testing.T) {
 }
 
 func TestCommand_Stash(t *testing.T) {
-	// TODO: Test the stash command
+	w := NewWorld(8)
+	name, err := w.SpawnRover()
+	assert.NoError(t, err)
+
+	info, err := w.GetRover(name)
+	assert.NoError(t, err)
+	assert.Empty(t, info.Inventory)
+
+	// Drop a pickup below us
+	w.Atlas.SetObject(info.Pos, Object{Type: roveapi.Object_RockSmall})
+
+	// Try and stash it
+	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_stash})
+	assert.NoError(t, err)
+	w.Tick()
+
+	// Check we now have it in the inventory
+	info, err = w.GetRover(name)
+	assert.NoError(t, err)
+	assert.Equal(t, 1, len(info.Inventory))
+	assert.Equal(t, Object{Type: roveapi.Object_RockSmall}, info.Inventory[0])
+
+	// Check it's no longer on the atlas
+	_, obj := w.Atlas.QueryPosition(info.Pos)
+	assert.Equal(t, Object{Type: roveapi.Object_ObjectUnknown}, obj)
 }
 
 func TestCommand_Repair(t *testing.T) {
-	// TODO: Test the repair command
+	w := NewWorld(8)
+	name, err := w.SpawnRover()
+	assert.NoError(t, err)
+
+	info, err := w.GetRover(name)
+	assert.NoError(t, err)
+	assert.Equal(t, info.MaximumIntegrity, info.Integrity)
+
+	// Put a blocking rock to the north
+	w.Atlas.SetObject(info.Pos.Added(maths.Vector{X: 0, Y: 1}), Object{Type: roveapi.Object_RockLarge})
+
+	// Try and move and make sure we're blocked
+	newpos, err := w.TryMoveRover(name, roveapi.Bearing_North)
+	assert.NoError(t, err)
+	assert.Equal(t, info.Pos, newpos)
+
+	// Check we're damaged
+	info, err = w.GetRover(name)
+	assert.NoError(t, err)
+	assert.Equal(t, info.MaximumIntegrity-1, info.Integrity)
+
+	// Stash a repair object
+	w.Atlas.SetObject(info.Pos, Object{Type: roveapi.Object_RockSmall})
+	obj, err := w.RoverStash(name)
+	assert.NoError(t, err)
+	assert.Equal(t, roveapi.Object_RockSmall, obj)
+
+	// Enqueue the repair and tick
+	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_repair})
+	assert.NoError(t, err)
+	w.Tick()
+
+	// Check we're repaired
+	info, err = w.GetRover(name)
+	assert.NoError(t, err)
+	assert.Equal(t, info.MaximumIntegrity, info.Integrity)
+	assert.Equal(t, 0, len(info.Inventory))
 }
 
 func TestCommand_Broadcast(t *testing.T) {
-	// TODO: Test the stash command
+	w := NewWorld(8)
+	name, err := w.SpawnRover()
+	assert.NoError(t, err)
+
+	// Enqueue the broadcast and tick
+	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_broadcast, Broadcast: []byte("ABC")})
+	assert.NoError(t, err)
+	w.Tick()
+
+	info, err := w.GetRover(name)
+	assert.NoError(t, err)
+	assert.Contains(t, info.Logs[len(info.Logs)-1].Text, "ABC")
 }
 
 func TestCommand_Invalid(t *testing.T) {
-	// TODO: Test an invalid command
+	w := NewWorld(8)
+	name, err := w.SpawnRover()
+	assert.NoError(t, err)
+
+	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_none})
+	assert.Error(t, err)
 }
diff --git a/pkg/rove/rover.go b/pkg/rove/rover.go
index fb13ddc..ce0edcd 100644
--- a/pkg/rove/rover.go
+++ b/pkg/rove/rover.go
@@ -13,6 +13,10 @@ import (
 	"github.com/mdiluz/rove/proto/roveapi"
 )
 
+const (
+	maxLogEntries = 16
+)
+
 // RoverLogEntry describes a single log entry for the rover
 type RoverLogEntry struct {
 	// Time is the timestamp of the entry
@@ -89,6 +93,11 @@ func (r *Rover) AddLogEntryf(format string, args ...interface{}) {
 			Text: text,
 		},
 	)
+
+	// Limit the number of logs
+	if len(r.Logs) > maxLogEntries {
+		r.Logs = r.Logs[len(r.Logs)-maxLogEntries:]
+	}
 }
 
 var wordsFile = os.Getenv("WORDS_FILE")
diff --git a/pkg/rove/world.go b/pkg/rove/world.go
index ea91fbc..a81cf05 100644
--- a/pkg/rove/world.go
+++ b/pkg/rove/world.go
@@ -11,7 +11,8 @@ import (
 )
 
 const (
-	TicksPerNormalMove = 4
+	// ticksPerNormalMove defines the number of ticks it should take for a "normal" speed move
+	ticksPerNormalMove = 4
 )
 
 // CommandStream is a list of commands to execute in order
@@ -515,16 +516,16 @@ func (w *World) Tick() {
 		switch diff {
 		case 0:
 			// Going with the wind, travel at base speed of once every 4 ticks
-			ticksToMove = TicksPerNormalMove
+			ticksToMove = ticksPerNormalMove
 		case 1:
 			// At a slight angle, we can go a little faster
-			ticksToMove = TicksPerNormalMove / 2
+			ticksToMove = ticksPerNormalMove / 2
 		case 2:
 			// Perpendicular to wind, max speed
 			ticksToMove = 1
 		case 3:
 			// Heading at 45 degrees into the wind, back to min speed
-			ticksToMove = TicksPerNormalMove
+			ticksToMove = ticksPerNormalMove
 		case 4:
 			// Heading durectly into the wind, no movement at all
 		default:
diff --git a/pkg/rove/world_test.go b/pkg/rove/world_test.go
index a3c2f47..db9fcb6 100644
--- a/pkg/rove/world_test.go
+++ b/pkg/rove/world_test.go
@@ -419,7 +419,7 @@ func TestWorld_Sailing(t *testing.T) {
 	assert.Equal(t, maths.Vector{Y: 0}, info.Pos)
 
 	// Loop a few more times
-	for i := 0; i < TicksPerNormalMove-2; i++ {
+	for i := 0; i < ticksPerNormalMove-2; i++ {
 		world.Tick()
 		info, err := world.GetRover(name)
 		assert.NoError(t, err)
@@ -441,7 +441,7 @@ func TestWorld_Sailing(t *testing.T) {
 	assert.Equal(t, roveapi.Bearing_South, b)
 
 	// Tick a bunch, we should never move
-	for i := 0; i < TicksPerNormalMove*2; i++ {
+	for i := 0; i < ticksPerNormalMove*2; i++ {
 		world.Tick()
 		info, err := world.GetRover(name)
 		assert.NoError(t, err)