An island by the garden channel. The island has a excursion harbour maintained by Uusimaa province recreation area association. Fastening by hook on the rock. There is an information point, restrooms, waste disposal point, cooking facilities, and a watchtower on the island.

A boat route branches off past Långö from the main channel of for boating; a shortcut to Barösund. This way you can get to the remains of Raseborg castle, dating from the 1300's. The nominal draught of the route is 1.2 m. Navigation only at your own risk. The south part of Långö island belongs to Uusimaa recreation area association, and it can be used as an excursion harbour

Stora Svartö is a popular excursion harbour. A 1.2 m-route leads to the outing island maintained by the City of Helsinki. With careful navigation, a boat with even a deeper draught can get there. There are restrooms, waste disposal points, and sheltered cooking points on the island. In 1789 the island served as harbour for Swedish-Finnish gunboats. There is another recreation area of the city west of the main channel. The boats can also be attached to the docks of the marina. The marina has a launch ramp.

A charming sandy-beached island suited for excursions outside Kotka and Pyhtää. This fishing village had a population of 200 at the turn of the 19th and 20th centuries. There is still habitation all the year round. The village shore has a good harbour with all basic services (no refuelling point). There is a shop in the village and a unique "archipelago museum", and a restaurant. The graveyard is a short walk away. Fishermen's wives collected round pebbles from the shallows to be shipped to St Petersburg for paving stones. You can also get to the island by coasting vessel from Kotka and Pyhtää.

The gorgeous beaches around the stately beacon at the north end of Kaunissaari are very popular among boaters. Those who anchor should watch out for the waves caused by boat traffic on a busy fairway nearby

The main channel for boating winds eastward on the north side of Lilla Svartön island. A garden channel of 1.2 m flanked by summerhouse settlement parts from the channel. South of Böle, a 1.2 m-route parts from the channel toward the leeward cove of Bockfjärden.

There is a sheltered cove for visiting boaters on the northwest rim of Ulko-Tammio. The cluster of islands is part of the national park of the eastern Gulf of Finland. The token bird for the park is black guillemot (Cepphus grylle). There is an information point near the harbour, barbecue facilities and toilets. The east shore has a cove and barbecue facilities for boaters.
There is a bird tower at the highest point of the island with a magnificent view over the national park. You can even see Tytärsaari on the Russian side on a good weather. The island also has a bomb shelter open for public and museum cannons from the Second World War. The control tower of the border guard detachment is situated in the area closed from visitors. On the east shore of the island there is a natural harbour suited for boaters (except during easterly winds).

There is a protected anchorage to the NW between Koön and Svartholmen.

On Furuholm a sector light illuminates channels in three directions. The main channel of for boating turns north. A 5.0 m-channel heads due east through the national park of Ekenäs archipelago. Heavy fighting took place between Finnish and Soviet troops on Hästö and neighbouring islands south of Furuholmen in 1941. Due Northeast a moorage nestles in the lee between Koö and Svartholmen

There is a relatively sheltered excursion harbour at the Northeast tip of Vormö with rings attached to the rock for tying the mooring. Another excursion harbour is situated to the north between Klobbackan headland and the islets to the south of it. The headland is situated to the east of the windmills.

South from Grimsholmen at the tip of Järvö island is the excursion harbour of Uusimaa province recreation area association. There is a shelter harbour sheltered from winds in the cove between Ormholmen and Järvö. It is forbidden to land on military area (Järvö).

A boat route leads from the grand-looking Kalasiiansalmi to the southeast and northwest. There are no spar buoys on the route. Two rather small cairns point to where the route is situated at the ends of the sound. The boaters will be navigating at their own risk, and would be well advised to exercise due caution on the route. The nominal sounding is 1.2 m. There are good places for going ashore along the route.

Majasaari recreation area in Vehkalahti municipality has an excursion harbour where you can moor using anchor. The shore is rather sheltered from all except the east and northeast winds. In summer, the wind direction in the shores of the Gulf of Finland is mainly southwest. The island was used as a German submarine base during the Second World War.

Kuorsalo island is an excellent place to go on an excursion. The visit harbour is on the northeast shore. The island has been an important halting-place as early as in the Bronze and Iron Ages. The village was built by peasant shippers. It has the oldest graveyard in Finland, still in use. Outside the enclosure of the cemetery lie buried the crew of a Russian military aircraft that went down on January 30th 1940. The island is also an old pilot post. The last pilot house in Pitkäniemi is in the southern part of the island. No services available.

This natural and excursion harbour is the farthest to the east; and at the same time the easternmost destination in the eastern Gulf of Finland. To the north of the island there is a splendid marina and moorage particularly during a southern wind. The island has signposts of the national resort and a place for building a campfire. The lagoon is flanked by a rocky cliff, and on it the foundation of an old lighthouse. The monogram (initials) of King Gustavus III of Sweden to commemorate his visit in these waters. To the south of the island there is a beautiful shoreline garnished by blocks of stone. A Finnish fire control squad was destroyed on the island in August 1941.

Bockhamn excursion harbour is maintained by the Uudenmaan virkitysalueyhdistys. You can get to the sheltered cove through a narrow strait from the east side of the O-cairn. The water depth in the strait is c. 3 metres. The harbour is sheltered on all wind directions. Boats are moored by anchor or rings on the rocky shore. The harbour has public conveniences, waste disposal points, and places for making campfire.
East of the harbour on Skepparholmen island lies a memorial plate for an 8-year-old boy. Ernst-Albert Segerstrålen drowned in 1925 as he was returning bird eggs, that he had secretly collected, back to the nesting places.