diff --git a/frontend/cypress/e2e/side_window/prior_notification_list/pagination.spec.ts b/frontend/cypress/e2e/side_window/prior_notification_list/pagination.spec.ts
index 8447b856ee..3d0dcb15ea 100644
--- a/frontend/cypress/e2e/side_window/prior_notification_list/pagination.spec.ts
+++ b/frontend/cypress/e2e/side_window/prior_notification_list/pagination.spec.ts
@@ -20,29 +20,31 @@ context('Side Window > Prior Notification List > Pagination', () => {
         LogbookMessage.ApiListExtraData
       > = interception.response!.body
 
-      const fakeData = [
-        ...responseBody.data,
-        ...responseBody.data.map(priorNotification => ({ ...priorNotification, id: getPseudoRandomString() }))
-      ]
-
-      cy.intercept('GET', `${apiPathBase}*pageNumber=0&pageSize=10*`, {
+      const fakeData = Array.from({ length: 100 }).flatMap(() =>
+        responseBody.data.map(priorNotification => ({
+          ...priorNotification,
+          id: getPseudoRandomString()
+        }))
+      )
+
+      cy.intercept('GET', `${apiPathBase}*pageNumber=0&pageSize=50*`, {
         body: {
           ...responseBody,
-          data: fakeData.slice(0, 10),
+          data: fakeData.slice(0, 50),
           lastPageNumber: 1,
           pageNumber: 0,
-          pageSize: 10,
-          totalLength: 20
+          pageSize: 50,
+          totalLength: 100
         }
       }).as('getPriorNotificationsFirstPage')
-      cy.intercept('GET', `${apiPathBase}*pageNumber=0&pageSize=20*`, {
+      cy.intercept('GET', `${apiPathBase}*pageNumber=0&pageSize=100*`, {
         body: {
           ...responseBody,
-          data: fakeData.slice(0, 10),
+          data: fakeData.slice(0, 100),
           lastPageNumber: 1,
           pageNumber: 0,
-          pageSize: 20,
-          totalLength: 20
+          pageSize: 100,
+          totalLength: 100
         }
       }).as('getPriorNotificationsSecondPage')
 
@@ -50,11 +52,11 @@ context('Side Window > Prior Notification List > Pagination', () => {
 
       cy.wait('@getPriorNotificationsFirstPage')
 
-      cy.get('button').contains('Charger les 10 préavis suivants').click()
+      cy.get('button').contains('Charger les 50 préavis suivants').click()
 
       cy.wait('@getPriorNotificationsSecondPage')
 
-      cy.get('button').contains('Charger les 10 préavis suivants').should('not.exist')
+      cy.get('button').contains('Charger les 50 préavis suivants').should('not.exist')
     })
   })
 })
diff --git a/frontend/src/features/PriorNotification/components/PriorNotificationList/constants.ts b/frontend/src/features/PriorNotification/components/PriorNotificationList/constants.ts
index ea54d5241b..ff25fa1cb4 100644
--- a/frontend/src/features/PriorNotification/components/PriorNotificationList/constants.ts
+++ b/frontend/src/features/PriorNotification/components/PriorNotificationList/constants.ts
@@ -74,7 +74,7 @@ export const DEFAULT_LIST_FILTER_VALUES: ListFilter = {
   statuses: undefined
 }
 
-export const DEFAULT_PAGE_SIZE = 10
+export const DEFAULT_PAGE_SIZE = 50
 
 export const COMMUNITY_PRIOR_NOTIFICATION_TYPES = ['Préavis communautaire', 'Préavis navire tiers']
 export const DESIGNATED_PORTS_PRIOR_NOTIFICATION_TYPE_PREFIX = 'Ports désignés'
diff --git a/frontend/src/features/PriorNotification/components/PriorNotificationList/index.tsx b/frontend/src/features/PriorNotification/components/PriorNotificationList/index.tsx
index cd0182884d..43f34661e1 100644
--- a/frontend/src/features/PriorNotification/components/PriorNotificationList/index.tsx
+++ b/frontend/src/features/PriorNotification/components/PriorNotificationList/index.tsx
@@ -14,14 +14,13 @@ import { useListSorting } from '@hooks/useListSorting'
 import { useLoadingState } from '@hooks/useLoadingState'
 import { useMainAppDispatch } from '@hooks/useMainAppDispatch'
 import { useMainAppSelector } from '@hooks/useMainAppSelector'
-import { customSentry, CustomSentryMeasurementName } from '@libs/customSentry'
 import { DisplayedErrorKey } from '@libs/DisplayedError/constants'
 import { Accent, Button, Icon, Size, TableWithSelectableRows, usePrevious } from '@mtes-mct/monitor-ui'
 import { skipToken } from '@reduxjs/toolkit/query'
 import { flexRender, getCoreRowModel, getExpandedRowModel, useReactTable } from '@tanstack/react-table'
 import { isLegacyFirefox } from '@utils/isLegacyFirefox'
 import { useIsSuperUser } from 'auth/hooks/useIsSuperUser'
-import { useCallback, useEffect, useState } from 'react'
+import { useCallback, useEffect, useRef, useState } from 'react'
 import styled, { css } from 'styled-components'
 
 import { getTableColumns } from './columns'
@@ -43,6 +42,8 @@ type PriorNotificationListProps = Readonly<{
   isFromUrl: boolean
 }>
 export function PriorNotificationList({ isFromUrl }: PriorNotificationListProps) {
+  const lastFetchStartDateRef = useRef<number | undefined>(undefined)
+
   const dispatch = useMainAppDispatch()
   const listFilter = useMainAppSelector(state => state.priorNotification.listFilterValues)
   const openedPriorNotificationDetail = useMainAppSelector(
@@ -54,6 +55,7 @@ export function PriorNotificationList({ isFromUrl }: PriorNotificationListProps)
   const isSuperUser = useIsSuperUser()
 
   const [rowSelection, setRowSelection] = useState({})
+  const [lastFetchDuration, setLastFetchDuration] = useState<number | undefined>(undefined)
 
   const { apiPaginationParams, reactTablePaginationState, setReactTablePaginationState } = useListPagination(
     DEFAULT_PAGE_SIZE,
@@ -145,12 +147,17 @@ export function PriorNotificationList({ isFromUrl }: PriorNotificationListProps)
     }
   }, [previousListFilter, listFilter, table])
 
-  if (isBodyLoaderVisible) {
-    customSentry.startMeasurement(CustomSentryMeasurementName.PRIOR_NOTIFICATION_LIST_BODY_LOADING, '0')
-    customSentry.startMeasurement(CustomSentryMeasurementName.PRIOR_NOTIFICATION_LIST_BODY_SPINNER, '0')
-  } else {
-    customSentry.endMeasurement(CustomSentryMeasurementName.PRIOR_NOTIFICATION_LIST_BODY_SPINNER, '0', 2000)
-  }
+  useEffect(() => {
+    if (isFetching) {
+      lastFetchStartDateRef.current = Date.now()
+
+      return
+    }
+
+    if (lastFetchStartDateRef.current) {
+      setLastFetchDuration(Date.now() - lastFetchStartDateRef.current)
+    }
+  }, [isFetching])
 
   return (
     <>
@@ -176,7 +183,7 @@ export function PriorNotificationList({ isFromUrl }: PriorNotificationListProps)
             <TableTop $isFromUrl={isFromUrl}>
               <TableLegend>{`${
                 isBodyLoaderVisible || isError || totalLength === undefined ? '...' : totalLength
-              } préavis (tous les horaires sont en UTC)`}</TableLegend>
+              } préavis (tous les horaires sont en UTC) en ${isBodyLoaderVisible || isError || lastFetchDuration === undefined ? '...' : `${lastFetchDuration / 1000}s`}`}</TableLegend>
 
               {isSuperUser && (
                 <Button
diff --git a/frontend/src/hooks/__tests__/useLoadingState.test.ts b/frontend/src/hooks/__tests__/useLoadingState.test.ts
index e264972334..d0c9775b7c 100644
--- a/frontend/src/hooks/__tests__/useLoadingState.test.ts
+++ b/frontend/src/hooks/__tests__/useLoadingState.test.ts
@@ -124,12 +124,27 @@ describe('hooks/useLoadingState()', () => {
       })
     })
 
+    // Next page fetch starts
+    act(() => {
+      rerender({
+        filterAndSortingState: { filter: 'initial' },
+        isFetching: true,
+        paginationState: { pageIndex: 1, pageSize: 10 }
+      })
+    })
+
+    expect(result.current).toEqual({
+      isLoadingNewPage: false,
+      isLoadingNextPage: true,
+      isReloading: false
+    })
+
     // New page fetch starts
     act(() => {
       rerender({
         filterAndSortingState: { filter: 'changed' },
         isFetching: true,
-        paginationState: { pageIndex: 1, pageSize: 10 }
+        paginationState: { pageIndex: 0, pageSize: 10 }
       })
     })
 
diff --git a/frontend/src/hooks/useLoadingState.ts b/frontend/src/hooks/useLoadingState.ts
index 67453e2a5e..55e4c27de6 100644
--- a/frontend/src/hooks/useLoadingState.ts
+++ b/frontend/src/hooks/useLoadingState.ts
@@ -17,13 +17,18 @@ export type LoadingState = {
   isReloading: boolean
 }
 
+const NO_LOADING_STATE: LoadingState = {
+  isLoadingNewPage: false,
+  isLoadingNextPage: false,
+  isReloading: false
+}
+
 export function useLoadingState(
   isFetching: boolean,
   filterAndSortingState: AnyObject,
   paginationState: AnyObject
 ): LoadingState {
-  const isFirstFetchRef = useRef<boolean | undefined>(isFetching || undefined)
-  const isFirstRenderRef = useRef(true)
+  const initialPaginationState = useRef(paginationState)
   const lastLoadingStateRef = useRef<LoadingState>({
     isLoadingNewPage: isFetching,
     isLoadingNextPage: false,
@@ -38,49 +43,30 @@ export function useLoadingState(
   const previousPaginationState = usePreviousIf(paginationState, isFetching)
   const wasFetching = usePrevious(isFetching)
 
-  if (isFirstRenderRef.current) {
-    isFirstRenderRef.current = false
+  if (!isFetching) {
+    lastLoadingStateRef.current = NO_LOADING_STATE
 
     return lastLoadingStateRef.current
   }
 
-  if (!isFetching) {
-    if (isFirstFetchRef.current === true && !!wasFetching) {
-      isFirstFetchRef.current = false
-    }
-
-    lastLoadingStateRef.current = {
-      isLoadingNewPage: false,
-      isLoadingNextPage: false,
-      isReloading: false
-    }
-  } else {
-    const hasFilterAndSortingStateChanged =
-      isFirstFetchRef.current !== undefined && !isEqual(filterAndSortingState, previousFilterAndSortingState)
-    const hasPaginationStateChanged =
-      isFirstFetchRef.current !== undefined && !isEqual(paginationState, previousPaginationState)
-
-    if (isFirstFetchRef.current === undefined) {
-      isFirstFetchRef.current = true
-    } else if (isFirstFetchRef.current && (hasFilterAndSortingStateChanged || hasPaginationStateChanged)) {
-      isFirstFetchRef.current = false
-    }
+  const hasNewFilterAndSortingState = !isEqual(filterAndSortingState, previousFilterAndSortingState)
+  const hasNewPaginationState =
+    !isEqual(paginationState, previousPaginationState) && !isEqual(paginationState, initialPaginationState)
 
-    // If the data is still been fetched with the same filter/sorting & pagination states,
-    // while not being a first load, this means the loading state is the same as the last one.
-    if (!isFirstFetchRef.current && wasFetching && !hasFilterAndSortingStateChanged && !hasPaginationStateChanged) {
-      return lastLoadingStateRef.current
-    }
+  // If the data is still been fetched with the same filter/sorting & pagination states,
+  // this means the loading state is the same as the last one.
+  if (wasFetching && !hasNewFilterAndSortingState && !hasNewPaginationState) {
+    return lastLoadingStateRef.current
+  }
 
-    const isLoadingNewPage = isFirstFetchRef.current || hasFilterAndSortingStateChanged
-    const isLoadingNextPage = !isLoadingNewPage && !hasFilterAndSortingStateChanged && hasPaginationStateChanged
-    const isReloading = !isFirstFetchRef.current && !hasFilterAndSortingStateChanged && !hasPaginationStateChanged
+  const isLoadingNewPage = hasNewFilterAndSortingState
+  const isReloading = !hasNewFilterAndSortingState && !hasNewPaginationState
+  const isLoadingNextPage = !isLoadingNewPage && !isReloading
 
-    lastLoadingStateRef.current = {
-      isLoadingNewPage,
-      isLoadingNextPage,
-      isReloading
-    }
+  lastLoadingStateRef.current = {
+    isLoadingNewPage,
+    isLoadingNextPage,
+    isReloading
   }
 
   return lastLoadingStateRef.current
diff --git a/frontend/src/libs/customSentry.ts b/frontend/src/libs/customSentry.ts
index e133b2b136..e335057766 100644
--- a/frontend/src/libs/customSentry.ts
+++ b/frontend/src/libs/customSentry.ts
@@ -14,9 +14,7 @@ export enum CustomSentryMeasurementName {
   LOGBOOK_PRIOR_NOTIFICATION_FORM_SPINNER = 'LOGBOOK_PRIOR_NOTIFICATION_FORM_SPINNER',
   MANUAL_PRIOR_NOTIFICATION_FORM_LOADING = 'MANUAL_PRIOR_NOTIFICATION_FORM_LOADING',
   MANUAL_PRIOR_NOTIFICATION_FORM_SPINNER = 'MANUAL_PRIOR_NOTIFICATION_FORM_SPINNER',
-  PRIOR_NOTIFICATION_CARD_DOWNLOAD_BUTTON = 'PRIOR_NOTIFICATION_CARD_DOWNLOAD_BUTTON',
-  PRIOR_NOTIFICATION_LIST_BODY_LOADING = 'PRIOR_NOTIFICATION_LIST_BODY_LOADING',
-  PRIOR_NOTIFICATION_LIST_BODY_SPINNER = 'PRIOR_NOTIFICATION_LIST_BODY_SPINNER'
+  PRIOR_NOTIFICATION_CARD_DOWNLOAD_BUTTON = 'PRIOR_NOTIFICATION_CARD_DOWNLOAD_BUTTON'
 }
 
 class CustomSentry {