Add nautical miles (with feet for altitude).

Fixes #1280.

src/androidTest/java/de/dennisguse/opentracks/data/models/DistanceFormatterTest.java

@@ -12,6 +12,7 @@ import org.junit.runner.RunWith;
 
 import de.dennisguse.opentracks.settings.UnitSystem;
 
+//TODO Parametrized tests
 @RunWith(AndroidJUnit4.class)
 public class DistanceFormatterTest {
 
@@ -42,4 +43,17 @@ public class DistanceFormatterTest {
         // A small number in imperial
         assertEquals("328.08 ft", formatter.formatDistance(Distance.of(100)));
     }
+
+    @Test
+    public void testFormatDistance_nautical() {
+        DistanceFormatter formatter = DistanceFormatter.Builder()
+                .setDecimalCount(2)
+                .setUnit(UnitSystem.NAUTICAL_IMPERIAL)
+                .build(context);
+
+        // A large number in nautical
+        assertEquals("2.70 NM", formatter.formatDistance(Distance.of(5000)));
+        // A small number in nautical
+        assertEquals("0.05 NM", formatter.formatDistance(Distance.of(100)));
+    }
 }

src/androidTest/java/de/dennisguse/opentracks/data/models/SpeedFormatterTest.java

@@ -12,6 +12,7 @@ import org.junit.runner.RunWith;
 
 import de.dennisguse.opentracks.settings.UnitSystem;
 
+//TODO Use make parametrized tests?
 @RunWith(AndroidJUnit4.class)
 public class SpeedFormatterTest {
 
@@ -39,12 +40,22 @@ public class SpeedFormatterTest {
                 .setReportSpeedOrPace(false)
                 .build(context);
 
-//        assertEquals("TODO", formatter.getSpeedParts(Speed.of(3.34)).first);
+        assertEquals("8:02", formatter.getSpeedParts(Speed.of(3.34)).first);
-//        assertEquals("TODO", formatter.getSpeedParts(Speed.of(3.33)).first);
-
         assertEquals("min/mi", formatter.getSpeedParts(Speed.zero()).second);
     }
 
+    @Test
+    public void testGetSpeedParts_pace_nautical() {
+        SpeedFormatter formatter = SpeedFormatter.Builder()
+                .setDecimalCount(2)
+                .setUnit(UnitSystem.NAUTICAL_IMPERIAL)
+                .setReportSpeedOrPace(false)
+                .build(context);
+
+        assertEquals("9:14", formatter.getSpeedParts(Speed.of(3.34)).first);
+        assertEquals("min/NM", formatter.getSpeedParts(Speed.zero()).second);
+    }
+
     @Test
     public void testGetSpeedParts_speed_metric() {
         SpeedFormatter formatter = SpeedFormatter.Builder()
@@ -69,6 +80,18 @@ public class SpeedFormatterTest {
         assertEquals("mph", formatter.getSpeedParts(Speed.zero()).second);
     }
 
+    @Test
+    public void testGetSpeedParts_speed_nautical() {
+        SpeedFormatter formatter = SpeedFormatter.Builder()
+                .setDecimalCount(2)
+                .setUnit(UnitSystem.NAUTICAL_IMPERIAL)
+                .setReportSpeedOrPace(true)
+                .build(context);
+
+        assertEquals("6.5", formatter.getSpeedParts(Speed.of(3.34)).first);
+        assertEquals("knots", formatter.getSpeedParts(Speed.zero()).second);
+    }
+
     @Test
     public void testFormatSpeed() {
         SpeedFormatter formatter = SpeedFormatter.Builder()

src/main/java/de/dennisguse/opentracks/chart/ChartValueSeries.java

@@ -44,6 +44,7 @@ abstract class ChartValueSeries {
     private final int[] intervalValues;
     private final int metricTitleId;
     private final int imperialTitleId;
+    private final int nauticalTitleId;
     private final Paint fillPaint;
     private final Paint strokePaint;
     private final Paint titlePaint;
@@ -57,24 +58,13 @@ abstract class ChartValueSeries {
     private int maxMarkerValue = interval * ChartView.Y_AXIS_INTERVALS;
     private boolean enabled = true;
 
-    /**
+    ChartValueSeries(Context context, int absoluteMin, int absoluteMax, int[] intervalValues, int metricTitleId, int imperialTitleId, int nauticalTitleId, int fillColor, int strokeColor, int fontSizeSmall, int fontSizeMedium) {
-     * Constructor.
-     *
-     * @param context         the context
-     * @param absoluteMin     the absolute min value
-     * @param absoluteMax     the absolute max value
-     * @param intervalValues  the list of interval values
-     * @param metricTitleId   the metric title id
-     * @param imperialTitleId the imperial title id
-     * @param fillColor       the fill color
-     * @param strokeColor     the stroke color
-     */
-    ChartValueSeries(Context context, int absoluteMin, int absoluteMax, int[] intervalValues, int metricTitleId, int imperialTitleId, int fillColor, int strokeColor, int fontSizeSmall, int fontSizeMedium) {
         this.absoluteMin = absoluteMin;
         this.absoluteMax = absoluteMax;
         this.intervalValues = intervalValues;
         this.metricTitleId = metricTitleId;
         this.imperialTitleId = imperialTitleId;
+        this.nauticalTitleId = nauticalTitleId;
 
         fillPaint = new Paint();
         fillPaint.setStyle(Style.FILL);
@@ -224,39 +214,27 @@ abstract class ChartValueSeries {
                 return metricTitleId;
             case IMPERIAL:
                 return imperialTitleId;
+            case NAUTICAL_IMPERIAL:
+                return nauticalTitleId;
             default:
                 throw new RuntimeException("Not implemented");
         }
     }
 
-    /**
-     * Gets the title paint.
-     */
     Paint getTitlePaint() {
         return titlePaint;
     }
 
-    /**
-     * Gets the marker paint.
-     */
     Paint getMarkerPaint() {
         return markerPaint;
     }
 
-    /**
-     * Gets the largest marker.
-     */
     String getLargestMarker() {
         String minMarker = numberFormat.format(getMinMarkerValue());
         String maxMarker = numberFormat.format(getMaxMarkerValue());
         return minMarker.length() >= maxMarker.length() ? minMarker : maxMarker;
     }
 
-    /**
-     * Formats a marker value.
-     *
-     * @param value the value
-     */
     String formatMarker(int value) {
         return numberFormat.format(value);
     }

src/main/java/de/dennisguse/opentracks/chart/ChartView.java

@@ -203,6 +203,7 @@ public class ChartView extends View {
                 new int[]{5, 10, 25, 50, 100, 250, 500, 1000, 2500, 5000},
                 R.string.description_altitude_metric,
                 R.string.description_altitude_imperial,
+                R.string.description_altitude_imperial,
                 R.color.chart_altitude_fill,
                 R.color.chart_altitude_border,
                 fontSizeSmall,
@@ -224,6 +225,7 @@ public class ChartView extends View {
                 new int[]{1, 5, 10, 20, 50, 100},
                 R.string.description_speed_metric,
                 R.string.description_speed_imperial,
+                R.string.description_speed_nautical,
                 R.color.chart_speed_fill,
                 R.color.chart_speed_border,
                 fontSizeSmall,
@@ -246,6 +248,7 @@ public class ChartView extends View {
                 new int[]{1, 2, 5, 10, 15, 20, 30, 60, 120},
                 R.string.description_pace_metric,
                 R.string.description_pace_imperial,
+                R.string.description_pace_nautical,
                 R.color.chart_pace_fill,
                 R.color.chart_pace_border,
                 fontSizeSmall,
@@ -268,6 +271,7 @@ public class ChartView extends View {
                 new int[]{25, 50},
                 R.string.description_sensor_heart_rate,
                 R.string.description_sensor_heart_rate,
+                R.string.description_sensor_heart_rate,
                 R.color.chart_heart_rate_fill,
                 R.color.chart_heart_rate_border,
                 fontSizeSmall,
@@ -289,6 +293,7 @@ public class ChartView extends View {
                 new int[]{5, 10, 25, 50},
                 R.string.description_sensor_cadence,
                 R.string.description_sensor_cadence,
+                R.string.description_sensor_cadence,
                 R.color.chart_cadence_fill,
                 R.color.chart_cadence_border,
                 fontSizeSmall,
@@ -309,6 +314,7 @@ public class ChartView extends View {
                 new int[]{5, 50, 100, 200},
                 R.string.description_sensor_power,
                 R.string.description_sensor_power,
+                R.string.description_sensor_power,
                 R.color.chart_power_fill,
                 R.color.chart_power_border,
                 fontSizeSmall,
@@ -732,6 +738,8 @@ public class ChartView extends View {
                     return context.getString(R.string.unit_kilometer);
                 case IMPERIAL:
                     return context.getString(R.string.unit_mile);
+                case NAUTICAL_IMPERIAL:
+                    return context.getString(R.string.unit_nautical_mile);
                 default:
                     throw new RuntimeException("Not implemented");
             }

src/main/java/de/dennisguse/opentracks/data/models/Distance.java

@@ -29,6 +29,10 @@ public class Distance {
         return of(distance_mile * UnitConversions.MI_TO_M);
     }
 
+    public static Distance ofNauticalMile(double distance_mile) {
+        return of(distance_mile * UnitConversions.NAUTICAL_MILE_TO_M);
+    }
+
     public static Distance ofKilometer(double distance_km) {
         return of(distance_km * UnitConversions.KM_TO_M);
     }
@@ -51,6 +55,8 @@ public class Distance {
                 return Distance.ofKilometer(1);
             case IMPERIAL:
                 return Distance.ofMile(1);
+            case NAUTICAL_IMPERIAL:
+                return Distance.ofNauticalMile(1);
             default:
                 throw new RuntimeException("Not implemented");
         }
@@ -114,12 +120,18 @@ public class Distance {
         return toKM() * UnitConversions.KM_TO_MI;
     }
 
+    public double toNauticalMiles() {
+        return toKM() * UnitConversions.KM_TO_NAUTICAL_MILE;
+    }
+
     public double toKM_Miles(UnitSystem unitSystem) {
         switch (unitSystem) {
             case METRIC:
                 return toKM();
             case IMPERIAL:
                 return toMI();
+            case NAUTICAL_IMPERIAL:
+                return toNauticalMiles();
             default:
                 throw new RuntimeException("Not implemented");
         }
@@ -129,6 +141,7 @@ public class Distance {
         switch (unitSystem) {
             case METRIC:
                 return toM();
+            case NAUTICAL_IMPERIAL:
             case IMPERIAL:
                 return toFT();
             default:

src/main/java/de/dennisguse/opentracks/data/models/DistanceFormatter.java

@@ -46,6 +46,7 @@ public class DistanceFormatter {
                 case METRIC:
                     return new Pair<>(null, resources.getString(R.string.unit_meter));
                 case IMPERIAL:
+                case NAUTICAL_IMPERIAL:
                     return new Pair<>(null, resources.getString(R.string.unit_feet));
                 default:
                     throw new RuntimeException("Not implemented");
@@ -65,6 +66,12 @@ public class DistanceFormatter {
                 } else {
                     return new Pair<>(StringUtils.formatDecimal(distance.toFT(), decimalCount), resources.getString(R.string.unit_feet));
                 }
+            case NAUTICAL_IMPERIAL:
+                if (distance.greaterThan(Distance.ofNauticalMile(0.5))) {
+                    return new Pair<>(StringUtils.formatDecimal(distance.toNauticalMiles(), decimalCount), resources.getString(R.string.unit_nautical_mile));
+                } else {
+                    return new Pair<>(StringUtils.formatDecimal(distance.toFT(), decimalCount), resources.getString(R.string.unit_feet));
+                }
             default:
                 throw new RuntimeException("Not implemented");
         }

src/main/java/de/dennisguse/opentracks/data/models/Speed.java

@@ -93,6 +93,10 @@ public class Speed {
         return toKMH() * UnitConversions.KM_TO_MI;
     }
 
+    public double toKnots() {
+        return toKMH() * UnitConversions.KM_TO_NAUTICAL_MILE;
+    }
+
     public Duration toPace(UnitSystem unitSystem) {
         if (isZero()) {
             return Duration.ofSeconds(0);
@@ -106,6 +110,9 @@ public class Speed {
             case IMPERIAL:
                 distance *= UnitConversions.M_TO_MI;
                 break;
+            case NAUTICAL_IMPERIAL:
+                distance *= UnitConversions.M_TO_NAUTICAL_MILE;
+                break;
             default:
                 throw new RuntimeException("Not implemented");
         }
@@ -119,6 +126,8 @@ public class Speed {
                 return toKMH();
             case IMPERIAL:
                 return toMPH();
+            case NAUTICAL_IMPERIAL:
+                return toKnots();
             default:
                 throw new RuntimeException("Not implemented");
         }

src/main/java/de/dennisguse/opentracks/data/models/SpeedFormatter.java

@@ -47,6 +47,9 @@ public class SpeedFormatter {
             case IMPERIAL:
                 unitId = reportSpeedOrPace ? R.string.unit_mile_per_hour : R.string.unit_minute_per_mile;
                 break;
+            case NAUTICAL_IMPERIAL:
+                unitId = reportSpeedOrPace ? R.string.unit_knots : R.string.unit_minute_per_nautical_mile;
+                break;
             default:
                 throw new RuntimeException("Not implemented");
         }

src/main/java/de/dennisguse/opentracks/data/models/UnitConversions.java

@@ -53,6 +53,9 @@ public class UnitConversions {
     public static final double M_TO_MI = M_TO_KM * KM_TO_MI;
     // multiplication factor to convert meters to feet
     public static final double M_TO_FT = M_TO_MI * MI_TO_FT;
+    public static final double NAUTICAL_MILE_TO_M = 1852.0;
+    public static final double M_TO_NAUTICAL_MILE = 1 / NAUTICAL_MILE_TO_M;
+    public static final double KM_TO_NAUTICAL_MILE = 1000 * M_TO_NAUTICAL_MILE;
     // multiplication factor to convert meters per second to kilometers per hour
     public static final double MPS_TO_KMH = M_TO_KM / (S_TO_MIN * MIN_TO_HR);
     // multiplication factor to convert miles to km

src/main/java/de/dennisguse/opentracks/services/announcement/VoiceAnnouncementUtils.java

@@ -57,6 +57,13 @@ class VoiceAnnouncementUtils {
                 unitDistanceTTS = "mile";
                 unitSpeedTTS = "mile per hour";
                 break;
+            case NAUTICAL_IMPERIAL:
+                perUnitStringId = R.string.voice_per_nautical_mile;
+                distanceId = R.plurals.voiceDistanceNauticalMiles;
+                speedId = R.plurals.voiceSpeedMKnots;
+                unitDistanceTTS = "nautical mile";
+                unitSpeedTTS = "knots";
+                break;
             default:
                 throw new RuntimeException("Not implemented");
         }

src/main/java/de/dennisguse/opentracks/settings/DefaultsSettingsFragment.java

@@ -74,6 +74,7 @@ public class DefaultsSettingsFragment extends PreferenceFragmentCompat implement
                 entriesId = R.array.stats_rate_metric_options;
                 break;
             case IMPERIAL:
+            case NAUTICAL_IMPERIAL:
                 entriesId = R.array.stats_rate_imperial_options;
                 break;
             default:

src/main/java/de/dennisguse/opentracks/settings/PreferencesUtils.java

@@ -214,7 +214,6 @@ public class PreferencesUtils {
     //TODO Check if actually needed or can be superseeded by a flexible default in getUnit()
     public static void applyDefaultUnit() {
         if (getString(R.string.stats_units_key, "").equals("")) {
-
             if (!Locale.US.equals(Locale.getDefault())) {
                 setUnit(UnitSystem.METRIC);
             } else {
@@ -324,7 +323,7 @@ public class PreferencesUtils {
         UnitSystem unitSystem = getUnitSystem();
 
         DistanceFormatter formatter = DistanceFormatter.Builder()
-                .setDecimalCount(0)
+                .setDecimalCount(1)
                 .setUnit(unitSystem)
                 .build(resources);
         for (int i = 0; i < values.length; i++) {
@@ -418,7 +417,7 @@ public class PreferencesUtils {
 
         DistanceFormatter formatter = DistanceFormatter.Builder()
                 .setUnit(unitSystem)
-                .setDecimalCount(0)
+                .setDecimalCount(1)
                 .build(resources);
         for (int i = 0; i < entryValues.length; i++) {
             int value = Integer.parseInt(entryValues[i]);
@@ -434,6 +433,7 @@ public class PreferencesUtils {
                     }
                     break;
                 case IMPERIAL:
+                case NAUTICAL_IMPERIAL:
                     if (value == recordingDistanceIntervalDefault) {
                         entries[i] = resources.getString(R.string.value_integer_feet_recommended, (int) distance.toFT());
                     } else {
@@ -461,7 +461,7 @@ public class PreferencesUtils {
         UnitSystem unitSystem = getUnitSystem();
 
         DistanceFormatter formatter = DistanceFormatter.Builder()
-                .setDecimalCount(0)
+                .setDecimalCount(1)
                 .setUnit(unitSystem)
                 .build(resources);
         for (int i = 0; i < entryValues.length; i++) {
@@ -478,6 +478,7 @@ public class PreferencesUtils {
                     }
                     break;
                 case IMPERIAL:
+                case NAUTICAL_IMPERIAL:
                     if (value == maxRecordingDistanceDefault) {
                         entries[i] = resources.getString(R.string.value_integer_feet_recommended, (int) distance.toFT());
                     } else {
@@ -533,7 +534,7 @@ public class PreferencesUtils {
         UnitSystem unitSystem = getUnitSystem();
 
         DistanceFormatter formatter = DistanceFormatter.Builder()
-                .setDecimalCount(0)
+                .setDecimalCount(1)
                 .setUnit(unitSystem)
                 .build(resources);
 
@@ -555,6 +556,7 @@ public class PreferencesUtils {
                     }
                     break;
                 case IMPERIAL:
+                case NAUTICAL_IMPERIAL:
                     if (value == recordingGPSAccuracyDefault) {
                         entries[i] = resources.getString(R.string.value_integer_feet_recommended, (int) distance.toFT());
                     } else if (value == recordingGPSAccuracyExcellent) {
@@ -606,6 +608,14 @@ public class PreferencesUtils {
                         entries[i] = resources.getString(R.string.value_float_mile_hour, valueMPH);
                     }
                     break;
+                case NAUTICAL_IMPERIAL:
+                    double valueKnots = Speed.ofKMH(value).toKnots();
+                    if (value == idleSpeedDefault) {
+                        entries[i] = resources.getString(R.string.value_float_knots_recommended, valueKnots);
+                    } else {
+                        entries[i] = resources.getString(R.string.value_float_knots, valueKnots);
+                    }
+                    break;
                 default:
                     throw new RuntimeException("Not implemented");
             }

src/main/java/de/dennisguse/opentracks/settings/UnitSystem.java

@@ -4,7 +4,8 @@ import de.dennisguse.opentracks.R;
 
 public enum UnitSystem {
     METRIC(R.string.stats_units_metric),
-    IMPERIAL(R.string.stats_units_imperial);
+    IMPERIAL(R.string.stats_units_imperial),
+    NAUTICAL_IMPERIAL(R.string.stats_units_nautical); // Nautical miles with feet
 
     private final int preferenceIdentifier;
 

src/main/res/values/settings.xml

@@ -204,15 +204,20 @@
 
     <string name="stats_rate_key" translatable="false">statsRate</string>
     <string name="stats_rate_default" translatable="false">@string/stats_rate_speed_or_pace_default</string>
+    <string-array name="stats_rate_metric_options">
+        <item>@string/description_default_speed_or_pace</item>
+        <item>@string/description_speed_metric</item>
+        <item>@string/description_pace_metric</item>
+    </string-array>
     <string-array name="stats_rate_imperial_options">
         <item>@string/description_default_speed_or_pace</item>
         <item>@string/description_speed_imperial</item>
         <item>@string/description_pace_imperial</item>
     </string-array>
-    <string-array name="stats_rate_metric_options">
+    <string-array name="stats_rate_nautical_options">
         <item>@string/description_default_speed_or_pace</item>
-        <item>@string/description_speed_metric</item>
+        <item>@string/description_speed_nautical</item>
-        <item>@string/description_pace_metric</item>
+        <item>@string/description_pace_imperial</item>
     </string-array>
 
     <string name="stats_rate_speed_or_pace_default" translatable="false">ACTIVITY_TYPE</string>
@@ -229,12 +234,15 @@
     <string-array name="stats_units_values">
         <item>@string/stats_units_metric</item>
         <item>@string/stats_units_imperial</item>
+        <item>@string/stats_units_nautical</item>
     </string-array>
     <string name="stats_units_metric" translatable="false">METRIC</string>
     <string name="stats_units_imperial" translatable="false">IMPERIAL</string>
+    <string name="stats_units_nautical" translatable="false">NAUTICAL</string>
     <string-array name="stats_units_options">
         <item>@string/settings_stats_units_metric</item>
         <item>@string/settings_stats_units_imperial</item>
+        <item>@string/settings_stats_units_nautical</item>
     </string-array>
 
     <string name="track_name_key" translatable="false">trackName</string>

src/main/res/values/strings.xml

@@ -187,6 +187,7 @@ limitations under the License.
     <string name="description_min_altitude">Min elevation: %1$d m (%2$d ft)</string>
     <string name="description_moving_time">Moving time: %1$s</string>
     <string name="description_pace_imperial">Pace (min/mi)</string>
+    <string name="description_pace_nautical">Pace (min/NM)</string>
     <string name="description_pace_metric">Pace (min/km)</string>
     <string name="description_recorded_time">Recorded: %1$s</string>
     <string name="description_speed_ms">Speed (m/s)</string>
@@ -195,6 +196,7 @@ limitations under the License.
     <string name="description_sensor_power">Power (W)</string>
     <string name="description_default_speed_or_pace">By activity type</string>
     <string name="description_speed_imperial">Speed (mi/hr)</string>
+    <string name="description_speed_nautical">Speed (knots)</string>
     <string name="description_speed_metric">Speed (km/hr)</string>
     <string name="description_time">Time</string>
     <string name="description_total_distance">Total distance: %1$.2f km (%2$.1f mi)</string>
@@ -435,6 +437,7 @@ limitations under the License.
     <string name="settings_stats_rate_title">Preferred rate</string>
     <string name="settings_stats_units_imperial">Imperial (mi, ft)</string>
     <string name="settings_stats_units_metric">Metric (km, m)</string>
+    <string name="settings_stats_units_nautical">Nautical (NM, ft)</string>
     <string name="settings_stats_units_title">Preferred units</string>
 
     <!-- Settings public api -->
@@ -513,8 +516,11 @@ limitations under the License.
     <string name="unit_meter">m</string>
     <string name="unit_mile">mi</string>
     <string name="unit_mile_per_hour">mph</string>
+    <string name="unit_nautical_mile">NM</string>
+    <string name="unit_knots">kn</string>
     <string name="unit_minute_per_kilometer">min/km</string>
     <string name="unit_minute_per_mile">min/mi</string>
+    <string name="unit_minute_per_nautical_mile">min/NM</string>
     <!-- Location Coordinates -->
     <string name="location_coordinate">%1$s°</string>
     <string name="location_latitude_longitude">%1$s, %2$s</string>
@@ -529,8 +535,11 @@ limitations under the License.
     <string name="value_integer_meter_poor_gps">%1$d m (poor GPS)</string>
     <string name="value_integer_meter_recommended">%1$d m (recommended)</string>
     <string name="value_integer_mile_hour">%1$d mi/h</string>
+    <string name="value_integer_knots">%1$d knots</string>
     <string name="value_float_mile_hour">%1$.1f mi/h</string>
+    <string name="value_float_knots">%1$.1f knots</string>
     <string name="value_float_mile_hour_recommended">%1$.1f mi/h (recommended)</string>
+    <string name="value_float_knots_recommended">%1$.1f knots (recommended)</string>
     <string name="value_integer_minute">%1$d min</string>
     <string name="value_integer_second">%1$d s</string>
     <string name="value_none">None</string>
@@ -557,8 +566,13 @@ limitations under the License.
         <item quantity="one">1 mile per hour</item>
         <item quantity="other">%1$.1f miles per hour</item>
     </plurals>
+    <plurals name="voiceSpeedMKnots">
+        <item quantity="one">1 knot</item>
+        <item quantity="other">%1$.1f knots</item>
+    </plurals>
     <string name="voice_per_kilometer">per kilometer</string>
     <string name="voice_per_mile">per mile</string>
+    <string name="voice_per_nautical_mile">per nautical mile</string>
     <string name="lap_time">Lap time</string>
     <string name="pace">Pace</string>
     <string name="lap_speed">Lap speed</string>
@@ -572,6 +586,10 @@ limitations under the License.
         <item quantity="one">1 mile</item>
         <item quantity="other">%1$.2f miles</item>
     </plurals>
+    <plurals name="voiceDistanceNauticalMiles">
+        <item quantity="one">1 nautical mile</item>
+        <item quantity="other">%1$.2f nautical miles</item>
+    </plurals>
     <string name="average_heart_rate">Average heart rate</string>
     <string name="current_heart_rate">Current heart rate</string>
     <!-- Waypoint Type -->