Swimming Sites Opening in Paris: Navigation Conditions for Summer 2025

Traffic Information and Management Center: Hotline for Navigators

Have a question or doubt about the rules for your vessel? Contact the Traffic Management Center (CIGT) on VHF channel 69, 7 days a week from 7:00 a.m. to 6:30 p.m.

From July 5 to August 31, 2025, VNF will operate this center to inform users about navigation conditions in Paris related to the three swimming sites on the Seine. In coordination with the river police and City of Paris authorities, CIGT will broadcast updates via VHF channel 69.

Contact CIGT:

• +33 6 15 53 13 48 / cigt.dtbs@vnf.fr
• Mandatory listening on VHF channel 69

If You Operate a Pleasure Boat

Attention : starting July 5, 2025, all pleasure boats with a length greater than or equal to 20 m navigating within Paris must be equipped with radiotelephony to ensure continuous listening on both the ship-to-ship network (channel 10) and the nautical information network (channel 69) from 7:00 a.m. to 6:30 p.m.

Simultaneous monitoring is required; Dual Watch mode is not permitted.

For boats ≤ 20 m without fixed radio, priority must be given to monitoring channel 10.

Download: Map for summer navigation in Paris – Pleasure Boats

Except for Bercy, regular navigation conditions apply outside the swimming opening hours.

Bercy Site

Located on the right bank along Quai de Bercy (12th arrondissement), around the Simone de Beauvoir footbridge, two swimming areas of 35×12.5 m and 67×11 m will be enclosed by pilings and barriers.

Navigation conditions:

Navigation is maintained during swimming hours but with restrictions, including outside these hours:

Between Pont de Tolbiac and Pont de Bercy : 

• No U-turns.
• No overtaking.
• Convoys longer than 135 m are prohibited from crossing other boats.
• Exceptionally, HAROPA PORT authorized vessels using parking zones of the Port of Bercy may perform turning and trimming maneuvers to depart upstream or downstream.

At Pont de Tolbiac :

• Right bank channel (No. 4), usually for downstream traffic, will be closed (exceptions not applicable to leisure boats).
• Central channel remains open in both directions.
• Left bank channel reserved for upstream traffic.

At Pont de Bercy : 

• ight bank channel (No. 4), usually for downstream traffic, will be closed (exceptions not applicable to leisure boats).
• Central channel remains open in both directions.
• Left bank channel reserved for upstream traffic.

Bras Marie Site

Located on the right bank below Quai des Célestins, between Pont de Sully and Pont Marie (4th arrondissement), the 70×20 m swimming area will be fully withdrawn outside public opening hours.

Opening hours :

• Monday to Saturday: 8:00 a.m. – 11:30 a.m.
• Sunday: 8:00 a.m. – 5:30 p.m.

Navigation conditions :

• Navigation stopped in Bras Marie from 7:30 a.m. to 12:00 p.m. (Monday to Saturday) and from 7:30 a.m. to 6:00 p.m. (Sunday).
• Alternating passage between Île de la Cité and Île Saint-Louis at regular hours from Monday to Saturday.
• On Sundays, from 10:35 a.m. to 5:50 p.m., the traffic light between the Île de la Cité and Île Saint Louis remains green for downstream traffic. It is red for upstream traffic from 10:20 a.m. to 6:00 p.m.
• Bras de la Monnaie permitted upstream for vessels ≤ 60 m.
• Upbound boats may cross Paris via Bras de la Monnaie provided their dimensions are compatible: 60 m by 11.5 m for cargo vessels. Upbound boats that cannot use Bras de la Monnaie are invited to moor downstream of Paris between 11:00 a.m. and 6:00 p.m.

Bras de Grenelle Site

Located opposite Île aux Cygnes, at Port de Grenelle, between Pont de Bir-Hakeim and Pont Rouelle (15th arrondissement), the 60×20 m swimming area is marked with buoys and completely withdrawn outside swimming hours.

Opening hours :

• Monday to Friday: 10:00 a.m. – 5:30 p.m.
• Saturday: 10:00 a.m. – 4:45 p.m.
• Sunday: 10:00 a.m. – 12:00 p.m. / 12:30 p.m. – 2:15 p.m. / 2:45 p.m. – 5:30 p.m.

Navigation conditions :

• Navigation stopped in Bras de Grenelle between Pont de Grenelle and Pont Rouelle:
  • 9:30 a.m. – 6:00 p.m. (Mon–Fri)
  • 9:30 a.m. – 5:15 p.m. (Sat)
  • 9:30 a.m. – 6:00 p.m. (Sun)
• Navigation rerouted via the main channel in both directions during these times.
• Bras de Grenelle remains accessible to HAROPA Port authorized passenger boats.

I am a passenger boat operator

Attention : from July 5, 2025, for navigation in Paris, all commercial boats must be equipped with a radiotelephony installation to ensure permanent monitoring of the ship-to-ship network (channel 10) and the nautical information network from 7 a.m. to 6:30 p.m. (channel 69).

The radiocommunication installation must ensure simultaneous monitoring of these two networks. As a reminder, alternating monitoring on two channels (Dual Watch function) is not authorized.

Download : Map Navigating in Paris during the summer for passenger boats

Except for the Bercy site, outside swimming site opening hours, the usual navigation conditions apply.

Bercy site :

Located on Quai de Bercy, on both sides of the Simone de Beauvoir footbridge (12th arrondissement), two swimming areas of 35 x 12.5 m and 67 x 11 m will be delimited by dolphins and barriers.

Navigation conditions: Navigation is maintained during swimming hours but under navigation restrictions.

Between the Tolbiac and Bercy bridges : 

• No U-turns allowed
• No overtaking allowed

At Tolbiac bridge : 

• The right bank channel, reserved for downstream traffic, will be closed this summer.
• By exception, boats operated by the company MARINA DE BERCY may use the pass on the right bank (pass no. 4) in the downstream direction.
• The central channel remains open in both directions and the left bank channel is reserved for upstream traffic.

At Bercy bridge :

• The central channel remains open in both directions and the left bank channel is reserved for upstream traffic.
• The right bank channel (No. 4) is closed to traffic. If using a passenger stop on the right bank located between the swimming area and the Tolbiac bridge, the channel can be used in the downstream direction.
• As an exception, the right bank pass (pass no. 4) is authorized for boats using the port of Bercy throughout the bathing season.

Bras Marie site

Located below Quai des Célestins, between Sully bridge and Marie bridge (4th arrondissement / central Paris), the 70 x 20 m swimming area will be fully withdrawn outside public opening hours.

Public opening hours :

• 8:00 a.m. – 11:30 a.m. Monday to Saturday
• 8:00 a.m. – 5:30 p.m. Sunday

Navigation conditions :

• Navigation stopped in Bras Marie from 7:30 a.m. to 12:00 p.m. (Monday to Saturday) and from 7:30 a.m. to 6:00 p.m. (Sunday).
• During these navigation stops, passenger boats under 20 meters with a stop downstream of Marie bridge and authorized by HAROPA PORT will be allowed to use the central channel of Louis-Philippe bridge upstream. For these boats, navigation is performed only ahead, heading upstream to access downstream Bras Marie, and ahead heading downstream to exit, after executing a turning maneuver downstream of Marie bridge.
• Alternating passage between the Île de la Cité and Île Saint-Louis Monday to Saturday at usual hours.
• On Sundays, from 10:35 a.m. to 5:50 p.m., the traffic light between the Île de la Cité and Île Saint Louis remains green for downstream traffic. It is red for upstream traffic from 10:20 a.m. to 6:00 p.m.
• Upbound boats may cross Paris by using Bras de la Monnaie provided their dimensions are compatible: 60 m by 10 m for passenger boats.
• Upbound boats that cannot use Bras de la Monnaie are invited to moor downstream of Paris between 11:00 a.m. and 6:00 p.m.

Bras de Grenelle site

Located opposite Île aux Cygnes on the Port de Grenelle, between Bir-Hakeim bridge and Rouelle bridge (15th arrondissement), the 60 x 20 m swimming area is marked by buoys and fully withdrawn out of the channel, outside swimming opening hours.

Public opening hours :

• Monday to Friday: 10:00 a.m. – 5:30 p.m.
• Saturday: 10:00 a.m. – 4:45 p.m.
• Sunday: 10:00 a.m. – 12:00 p.m. / 12:30 p.m. – 2:15 p.m. / 2:45 p.m. – 5:30 p.m.

Navigation conditions :

• Navigation stopped in Bras de Grenelle between Grenelle bridge and Rouelle bridge:
  • From 9:30 a.m. to 6:00 p.m. (Monday to Friday),
  • From 9:30 a.m. to 5:15 p.m. (Saturday),
  • And from 9:30 a.m. to 6:00 p.m. (Sunday).
• All navigation is rerouted on the main channel in both directions during swimming hours.
• Bras de Grenelle remains accessible to passenger boats authorized by HAROPA Port.

I am a cargo boat operator

Attention : from July 5, 2025, for navigation in Paris, all cargo boats must be equipped with a radiotelephony installation to ensure permanent monitoring of the ship-to-ship network (channel 10) and the nautical information network from 7 a.m. to 6:30 p.m. (channel 69).

The radiocommunication installation must ensure simultaneous monitoring of these two networks. As a reminder, alternating monitoring on two channels (Dual Watch function) is not authorized.

Download : Map Navigating in Paris during the summer for cargo transport boats

Extension of lock opening hours : book your passage

From July 6 to September 1, VNF sets up a special free lock service upstream of Paris. Thus, the locks of Port-à-l’Anglais, Marolles and La Grande Bosse will be open one hour longer by reservation only at the following times :

• Sundays at Port-à-l’Anglais lock, from 6:00 p.m. to 7:00 p.m.
• Mondays at Marolles and La Grande Bosse locks, from 8:00 p.m. to 9:00 p.m.

To book your passage, please contact our teams the same day before 3:00 p.m. :

Port-à-l’Anglais Lock: phone – 01 43 75 32 24

• Marolles Lock: phone – 01 60 58 74 23
• La Grande Bosse Lock : phone – 01 60 58 74 23
• Except for the Bercy site, outside swimming site opening hours, usual navigation conditions apply.

Bercy site :

Located on Quai de Bercy, on both sides of Simone de Beauvoir footbridge (12th arrondissement), two swimming areas of 35 x 12.5 m and 67 x 11 m will be delimited by dolphins and barriers.

Navigation conditions :

Navigation is maintained during swimming hours but under navigation restrictions.

Between the Tolbiac and Bercy bridges : 

• No U-turns allowed
• No overtaking allowed
• Convoys longer than 135 m are prohibited from crossing any other boat.
  By exception, HAROPA PORT authorized boats using the parking zones of Port de Bercy can perform turning and trimming maneuvers to depart upstream or downstream.
• By way of exception, boats authorized by HAROPA PORT and using the parking areas of the port of Bercy can carry out turning and tremating maneuvers to leave heading upstream or downstream.

At Tolbiac bridge : 

• The right bank channel, reserved for downstream traffic, will be closed this summer.
• The central channel remains open in both directions and the left bank channel is reserved for upstream traffic.

At Bercy bridge : 

• The central channel remains open in both directions and the left bank channel is reserved for upstream traffic.
• The right bank channel (No. 4) is closed to traffic.
• By exception, HAROPA PORT authorized boats moored at Bercy downstream port may use the right bank channel (channel No. 4) in the downstream direction.

Bras Marie site

Located below Quai des Célestins, between Sully bridge and Marie bridge (4th arrondissement / central Paris), the 70 x 20 m swimming area will be fully withdrawn outside public opening hours.

Public opening hours : 

• 8:00 a.m. – 11:30 a.m. Monday to Saturday
• 8:00 a.m. – 5:30 p.m. Sunday

Navigation conditions :

• Navigation stopped in Bras Marie from 7:30 a.m. to 12:00 p.m. (Monday to Saturday) and from 7:30 a.m. to 6:00 p.m. (Sunday).
• Alternating passage between the Île de la Cité and Île Saint-Louis Monday to Saturday at usual hours.
• On Sundays, from 10:35 a.m. to 5:50 p.m., the traffic light between the Île de la Cité and Île Saint Louis remains green for downstream traffic. It is red for upstream traffic from 10:20 a.m. to 6:00 p.m.
• Bras de la Monnaie remains accessible to boats of length less than or equal to 60 m.
  Upbound boats may cross Paris by using Bras de la Monnaie provided their dimensions are compatible: 60 m by 11.5 m for cargo boats.
• Upbound boats that cannot use Bras de la Monnaie are invited to moor downstream of Paris between 11:00 a.m. and 6:00 p.m.

Bras de Grenelle site

Located opposite Île aux Cygnes on Port de Grenelle, between Bir-Hakeim bridge and Rouelle bridge (15th arrondissement), the 60 x 20 m swimming area is marked by buoys and fully withdrawn out of the channel, outside swimming opening hours.

Public opening hours :

• Monday to Friday: 10:00 a.m. – 5:30 p.m.
• Saturday: 10:00 a.m. – 4:45 p.m.
• Sunday: 10:00 a.m. – 12:00 p.m. / 12:30 p.m. – 2:15 p.m. / 2:45 p.m. – 5:30 p.m.

Navigation conditions :

• Navigation stopped in Bras de Grenelle between Grenelle bridge and Rouelle bridge:
  • From 9:30 a.m. to 6:00 p.m. (Monday to Friday),
  • From 9:30 a.m. to 5:15 p.m. (Saturday),
  • And from 9:30 a.m. to 6:00 p.m. (Sunday).
• Navigation is rerouted on the main channel in both directions during navigation stops.