The Gulf of Boni is a large inlet in the south of the island of Sulawesi

Sulawesi

Sulawesi is one of the four larger Sunda Islands of Indonesia and is situated between Borneo and the Maluku Islands. In Indonesia, only Sumatra, Borneo, and Papua are larger in territory, and only Java and Sumatra have larger Indonesian populations.- Etymology :The Portuguese were the first to...

, Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

. To the west lies Sulawesi's South Peninsula

South Peninsula, Sulawesi

The South Peninsula is one of the four principal peninsulas on the island of Sulawesi, stretching south from the central part of the island.Mount Lompobattang lies near the southern tip of this peninsula....

, and to the east is the island's South-east Peninsula

South-east Peninsula, Sulawesi

The South-east Peninsula is one of the four principal peninsulas on the island of Sulawesi, stretching south-east from the central part of the island.Several islands are situated off its southeastern tip, including Muna and Buton....

. To the south, the gulf opens into the Banda Sea

Banda Sea

The Banda Sea is a sea in the Maluku Islands of Indonesia, technically part of the Pacific Ocean but separated from it by hundreds of islands, as well as the Halmahera and Ceram Seas...

.

Extent

The International Hydrographic Organization

International Hydrographic Organization

The International Hydrographic Organization is the inter-governmental organisation representing the hydrographic community. It enjoys observer status at the UN and is the recognised competent authority on hydrographic surveying and nautical charting...

 (IHO) defines the Gulf of Boni as being one of the waters of the East Indian Archipelago

East Indian Archipelago

The East Indian Archipelago is a marine area designated by the International Hydrographic Organization . It consists of a number of seas and straits in the East Indies ....

. The IHO defines its southern limit as: "A line from, Tg. Lassa, Celebes [Sulawesi

Sulawesi

Sulawesi is one of the four larger Sunda Islands of Indonesia and is situated between Borneo and the Maluku Islands. In Indonesia, only Sumatra, Borneo, and Papua are larger in territory, and only Java and Sumatra have larger Indonesian populations.- Etymology :The Portuguese were the first to...

], to the North point of Kabaena

Kabaena

Kabaena is an island in the Flores Sea, Indonesia, off the coast of Sulawesi. It is a part of South East Sulawesi province. Its area is 873 km²....

(5°05′S 121°52′E) and thence up this meridian to the coast of Celebes".