diff --git a/internal/controller/fleet.go b/internal/controller/fleet.go
index 6bc1b13..6ac1ad4 100644
--- a/internal/controller/fleet.go
+++ b/internal/controller/fleet.go
@@ -17,7 +17,7 @@ type FleetState struct {
 	State       game.ShipGroupState
 	Destination uint
 	InSpace     func() (game.InSpace, bool)
-	OnPlanet    func() (uint, bool)
+	AtPlanet    func() (uint, bool)
 }
 
 func (fs *FleetState) inSpace() bool {
@@ -25,16 +25,16 @@ func (fs *FleetState) inSpace() bool {
 	return ok
 }
 
-func (fs FleetState) OnSamePlanet(other FleetState) bool {
-	op1, ok := fs.OnPlanet()
+func (fs FleetState) AtSamePlanet(other FleetState) bool {
+	pn1, ok := fs.AtPlanet()
 	if !ok {
 		return false
 	}
-	op2, ok := other.OnPlanet()
+	pn2, ok := other.AtPlanet()
 	if !ok {
 		return false
 	}
-	return op1 == op2
+	return pn1 == pn2
 }
 
 func (c *Cache) FleetState(fleetID uuid.UUID) FleetState {
@@ -43,16 +43,15 @@ func (c *Cache) FleetState(fleetID uuid.UUID) FleetState {
 	fs := &FleetState{
 		State:    fleetStateNil,
 		InSpace:  func() (game.InSpace, bool) { return game.InSpace{}, false },
-		OnPlanet: func() (uint, bool) { return 0, false },
+		AtPlanet: func() (uint, bool) { return 0, false },
 	}
 	for sg := range c.FleetGroups(ri, fi) {
 		if fs.State == fleetStateNil {
 			fs.State = sg.State()
 			fs.Destination = sg.Destination
-			if planet, ok := sg.OnPlanet(); ok {
-				fs.OnPlanet = func() (uint, bool) { return planet, ok }
-			}
-			if sg.StateInSpace != nil {
+			if pn, ok := sg.AtPlanet(); ok {
+				fs.AtPlanet = func() (uint, bool) { return pn, ok }
+			} else if sg.StateInSpace != nil {
 				fs.InSpace = func() (game.InSpace, bool) { return *sg.StateInSpace, true }
 			}
 			continue
@@ -63,8 +62,8 @@ func (c *Cache) FleetState(fleetID uuid.UUID) FleetState {
 		if fs.Destination != sg.Destination {
 			panic(fmt.Sprintf("FleetState: one or more ships in race's %q fleet %q has different destination", c.g.Race[ri].Name, c.g.Fleets[fi].Name))
 		}
-		if planet, ok := sg.OnPlanet(); ok {
-			if onPlanet, ok := fs.OnPlanet(); ok && onPlanet != planet {
+		if planet, ok := sg.AtPlanet(); ok {
+			if onPlanet, ok := fs.AtPlanet(); ok && onPlanet != planet {
 				panic(fmt.Sprintf("FleetState: one or more ships in race's %q fleet %q are on different planets: %d <> %d", c.g.Race[ri].Name, c.g.Fleets[fi].Name, onPlanet, planet))
 			}
 		}
@@ -142,7 +141,7 @@ func (c *Cache) JoinShipGroupToFleet(ri int, fleetName string, groupIndex, quant
 		}
 	} else {
 		fleetState := c.FleetState(c.g.Fleets[fi].ID)
-		if onPlanet, ok := fleetState.OnPlanet(); (ok && onPlanet != c.ShipGroup(sgi).Destination) || fleetState.State != game.StateInOrbit {
+		if onPlanet, ok := fleetState.AtPlanet(); (ok && onPlanet != c.ShipGroup(sgi).Destination) || fleetState.State != game.StateInOrbit {
 			return e.NewShipsNotOnSamePlanetError("fleet: %s", fleetName)
 		}
 	}
@@ -198,7 +197,7 @@ func (c *Cache) JoinFleets(ri int, fleetSourceName, fleetTargetName string) (err
 	}
 	stateSrc := c.FleetState(c.g.Fleets[fiSource].ID)
 	stateDst := c.FleetState(c.g.Fleets[fiTarget].ID)
-	if !stateSrc.OnSamePlanet(stateDst) {
+	if !stateSrc.AtSamePlanet(stateDst) {
 		return e.NewShipsNotOnSamePlanetError()
 	}
 
diff --git a/internal/controller/fleet_send.go b/internal/controller/fleet_send.go
index dc0dc9d..3238024 100644
--- a/internal/controller/fleet_send.go
+++ b/internal/controller/fleet_send.go
@@ -22,7 +22,7 @@ func (c *Cache) SendFleet(ri, fi int, planetNumber uint) error {
 	c.validateRaceIndex(ri)
 	c.validateFleetIndex(fi)
 	fleetState := c.FleetState(c.g.Fleets[fi].ID)
-	sourcePlanet, ok := fleetState.OnPlanet()
+	sourcePlanet, ok := fleetState.AtPlanet()
 	if !ok || game.StateInOrbit != fleetState.State && game.StateLaunched != fleetState.State {
 		return e.NewShipsBusyError()
 	}
diff --git a/internal/controller/ship_group_send.go b/internal/controller/ship_group_send.go
index 0d5b783..3386579 100644
--- a/internal/controller/ship_group_send.go
+++ b/internal/controller/ship_group_send.go
@@ -27,7 +27,7 @@ func (c *Cache) SendGroup(ri int, groupIndex, planetNumber, quantity uint) error
 		return e.NewSendShipHasNoDrivesError()
 	}
 
-	sourcePlanet, ok := c.ShipGroup(sgi).OnPlanet()
+	sourcePlanet, ok := c.ShipGroup(sgi).AtPlanet()
 	if !ok {
 		return e.NewShipsBusyError()
 	}
diff --git a/internal/model/game/game.go b/internal/model/game/game.go
index e01c29f..10ae54a 100644
--- a/internal/model/game/game.go
+++ b/internal/model/game/game.go
@@ -6,6 +6,7 @@ import (
 	"maps"
 
 	"github.com/google/uuid"
+	"github.com/iliadenisov/galaxy/internal/number"
 )
 
 type Float float64
@@ -19,7 +20,7 @@ func (f Float) Add(v float64) Float {
 }
 
 func (f Float) F() float64 {
-	return float64(f)
+	return number.Fixed12(float64(f))
 }
 
 type TechSet map[Tech]Float
diff --git a/internal/model/game/group.go b/internal/model/game/group.go
index 770049e..ffa5f45 100644
--- a/internal/model/game/group.go
+++ b/internal/model/game/group.go
@@ -142,8 +142,7 @@ func (sg ShipGroup) State() ShipGroupState {
 	}
 }
 
-// FIXME: ambigous func, refactor
-func (sg ShipGroup) OnPlanet() (uint, bool) {
+func (sg ShipGroup) AtPlanet() (uint, bool) {
 	switch sg.State() {
 	case StateInOrbit:
 		return sg.Destination, true
@@ -171,7 +170,7 @@ func (sg ShipGroup) Equal(other ShipGroup) bool {
 		sg.TechLevel(TechShields) == other.TechLevel(TechShields) &&
 		sg.TechLevel(TechCargo) == other.TechLevel(TechCargo) &&
 		sg.CargoType == other.CargoType &&
-		sg.Load.F()/float64(sg.Number) == other.Load.F()/float64(other.Number) &&
+		(sg.Load/F(float64(sg.Number))).F() == (other.Load/F(float64(other.Number))).F() &&
 		sg.State() == other.State()
 }
 
diff --git a/internal/model/game/group_test.go b/internal/model/game/group_test.go
index 5f789af..2f02c7c 100644
--- a/internal/model/game/group_test.go
+++ b/internal/model/game/group_test.go
@@ -244,6 +244,6 @@ func TestShipGroupEqual(t *testing.T) {
 
 	// dirty hack to equalize loads
 	left.Number = 5
-	left.Load = game.F(right.Load.F() / float64(right.Number) * float64(left.Number))
+	left.Load = game.F(float64(right.Load) / float64(right.Number) * float64(left.Number))
 	assert.True(t, left.Equal(right))
 }
diff --git a/internal/number/number.go b/internal/number/number.go
index 51d5308..3a8bf6d 100644
--- a/internal/number/number.go
+++ b/internal/number/number.go
@@ -6,6 +6,10 @@ func Fixed3(num float64) float64 {
 	return fixed(num, 3)
 }
 
+func Fixed12(num float64) float64 {
+	return fixed(num, 12)
+}
+
 func fixed(num float64, precision int) float64 {
 	output := math.Pow(10, float64(precision))
 	return float64(round(num*output)) / output