diff --git a/frontend/src/domain/use_cases/fleetSegment/deleteFleetSegment.ts b/frontend/src/domain/use_cases/fleetSegment/deleteFleetSegment.ts
index fac464192c..ea40fa8709 100644
--- a/frontend/src/domain/use_cases/fleetSegment/deleteFleetSegment.ts
+++ b/frontend/src/domain/use_cases/fleetSegment/deleteFleetSegment.ts
@@ -1,4 +1,5 @@
-import { deleteFleetSegmentFromAPI } from '../../../api/fleetSegment'
+import { deleteFleetSegmentFromAPI } from '@api/fleetSegment'
+
 import { setError } from '../../shared_slices/Global'
 
 import type { FleetSegment } from '../../types/fleetSegment'
@@ -6,11 +7,18 @@ import type { FleetSegment } from '../../types/fleetSegment'
 /**
  * Delete a fleet segment
  */
-export const deleteFleetSegment = (segment: string, year: number) => dispatch =>
-  deleteFleetSegmentFromAPI(segment, year)
-    .then(updatedFleetSegments =>
-      (Object.assign([], updatedFleetSegments) as FleetSegment[]).sort((a, b) => a.segment.localeCompare(b.segment))
-    )
-    .catch(error => {
-      dispatch(setError(error))
-    })
+export const deleteFleetSegment =
+  (segment: string, year: number) =>
+  async (dispatch): Promise<undefined | FleetSegment[]> => {
+    try {
+      const updatedFleetSegments = await deleteFleetSegmentFromAPI(segment, year)
+
+      return (Object.assign([], updatedFleetSegments) as FleetSegment[]).sort((a, b) =>
+        a.segment.localeCompare(b.segment)
+      )
+    } catch (e) {
+      dispatch(setError(e))
+
+      return undefined
+    }
+  }
diff --git a/frontend/src/features/Logbook/utils.ts b/frontend/src/features/Logbook/utils.ts
index d9ca7fe08f..8f2b403f64 100644
--- a/frontend/src/features/Logbook/utils.ts
+++ b/frontend/src/features/Logbook/utils.ts
@@ -31,22 +31,22 @@ export function buildCatchArray(catches: LogbookCatch[]): CatchWithProperties[]
   return catches
     .reduce((accumulator: CatchWithProperties[], logbookCatch) => {
       const sameSpeciesIndex = accumulator.findIndex(accCatch => accCatch.species === logbookCatch.species)
+      const logbookCatchProperties = getCatchPropertiesObject(logbookCatch)
 
       if (sameSpeciesIndex === NOT_FOUND) {
-        accumulator.push({
-          properties: [getCatchPropertiesObject(logbookCatch)],
+        return accumulator.concat({
+          properties: [logbookCatchProperties],
           species: logbookCatch.species,
           speciesName: undefinedize(logbookCatch.speciesName),
           weight: logbookCatch.weight ? logbookCatch.weight : 0
         })
-
-        return accumulator
       }
 
-      // @ts-ignore
-      accumulator[sameSpeciesIndex].properties.push(getCatchPropertiesObject(logbookCatch))
-      // @ts-ignore
-      accumulator[sameSpeciesIndex].weight += logbookCatch.weight ? parseFloat(logbookCatch.weight) : 0
+      const nextCatch = accumulator[sameSpeciesIndex] as CatchWithProperties
+      nextCatch.properties = nextCatch.properties.concat(logbookCatchProperties)
+      nextCatch.weight += logbookCatch.weight ?? 0
+
+      accumulator[sameSpeciesIndex] = nextCatch
 
       return accumulator
     }, [])
@@ -61,20 +61,19 @@ export function buildProtectedCatchArray(catches: ProtectedSpeciesCatch[]): Prot
       const sameSpeciesIndex = accumulator.findIndex(accCatch => accCatch.species === logbookCatch.species)
 
       if (sameSpeciesIndex === NOT_FOUND) {
-        accumulator.push({
+        return accumulator.concat({
           properties: [logbookCatch],
           species: logbookCatch.species,
           speciesName: undefinedize(logbookCatch.speciesName),
           weight: logbookCatch.weight ? logbookCatch.weight : 0
         })
-
-        return accumulator
       }
 
-      // @ts-ignore
-      accumulator[sameSpeciesIndex].properties.push(logbookCatch)
-      // @ts-ignore
-      accumulator[sameSpeciesIndex].weight += logbookCatch.weight ? parseFloat(logbookCatch.weight) : 0
+      const nextCatch = accumulator[sameSpeciesIndex] as ProtectedCatchWithProperties
+      nextCatch.properties = nextCatch.properties.concat(logbookCatch)
+      nextCatch.weight += logbookCatch.weight ?? 0
+
+      accumulator[sameSpeciesIndex] = nextCatch
 
       return accumulator
     }, [])