Sea Forts of India:
A Coastal Journey
Through History

I was on a motorbike. Riding along the Konkan coast, somewhere between Ratnagiri and Sindhudurg, when I saw it — a broken wall rising out of the sea. No signboard. No fence. No tourist bus in sight. Just a ruin, and the sound of waves, and the slow realisation that I was standing at the edge of a story nobody had told me.

That was the moment this series began. Not in a library, not with a plan — but with a motorbike, an open coast, and a question I couldn't stop asking: Who built this? And why does nobody know?

Over the next four years, I went back again and again. I rode the Konkan, the Malabar, the Coromandel. I climbed walls held together by little more than salt and stubbornness. I read treaties and trade records. I talked to locals who had grown up in the shadow of these forts without knowing what they were.

What I found was not just architecture. It was the entire shape of Indian history — the Arabs, the Portuguese, the Dutch, the British, the Marathas, the Siddhis — all of it written in stone along a coastline most Indians have never really looked at.

This series is my attempt to change that. One fort at a time.

A sea fort is a coastal fortification built specifically to control the sea — not just to defend land, but to command trade routes, monitor incoming ships, and project naval power. They are fundamentally different from the hill forts and plateau forts of the interior.

A hill fort like Raigad or Chittorgarh was built for land warfare — high walls, difficult terrain, a refuge of last resort. A sea fort was built for economics. Its position was chosen not for natural defensibility, but for visibility: could you see an incoming ship from here? Could your cannons reach it?

Three types of coastal fortifications appear across Indian history:

India's 5,600 km coastline was not a boundary. It was a highway. For centuries before the British arrived, the Arabian Sea and the Bay of Bengal were the most important trade routes in the world — and whoever controlled the coastline controlled the trade.

The Arabs dominated the Indian seas from the 6th century, running spice and textile trade with extraordinary efficiency. When Vasco da Gama arrived in 1498 and the Portuguese entered the picture, the stakes changed entirely. What followed was not just commerce — it was a two-hundred-year scramble for coastal control involving the Portuguese, Dutch, Danes, British, Marathas, Siddhis, Mughals, and dozens of smaller kingdoms.

Every fort along this coast was a response to that scramble. They served as trade checkpoints (tax incoming and outgoing vessels), naval bases (launch attacks, repair ships), diplomatic strongholds (treaties were signed, prisoners kept), and early warning systems (a cannon shot from Khanderi could be heard in Alibaug).

The west coast has 130+ coastal forts. The east coast has just 21. That imbalance tells the whole story: the Arabian Sea was the contested frontier, the Bay of Bengal a secondary theatre. The Portuguese, Dutch and British all came from the west. The Marathas fought them here. The forts rose where the fighting was.