Kettuvallam

Kettuvallam is a house boat widely used in the Indian state of Kerala. These have thatched roof covers over wooden hulls. The traditional kettuvallam is mainly used for promoting Kerala tourism.

In the Malayalam language "kettu" means "to tie" and “vallam” means boat – the two together make the local name "kettuvallam”. Each houseboat is constructed using the ancient principles and techniques of boat building by the local carpenters using 'Anjili' wood. Coir ropes are used for tightening the wooden planks together.

Boats in a variety of shapes and sizes have traditionally been the main means of transport of men and materials in the Kerala backwaters since olden days. In particular, the house boats were used to ship rice and spices and other goods between Kuttanad and the Cochin port. It was a three-day affair in those days. A standard house boat, which could be about 100 feet long, can hold up to 30 tons, about as much as three big lorries can carry. For the royalty these boats even became comfortable living quarters. It was the important mode of transportation in coastal Kerala just because of its accessibility to the most remote areas. However, the scenario changed. Motorized road, rail and air transportation scored over the slow and staid country boat, with people opting for speed.

A kettuvallam is about 100 feet in length and has a width of around 13 feet in the middle. The materials that go into the making are local and ecofriendly; bamboo poles, coconut fibre, ropes, bamboo mats, carpets etc. The main wood used is (Artocarpus hirsuta). There are houseboats with fully furnished single room, double room and triple rooms.

The hull is a series of wooden planks, long cut and carved, tied together using coir with coconut fibers stuffed in between. The hull which is made of hundreds of fine but heavy-duty planks of jack-wood is held together absolutely by coir knots (not a single nail is used). This framework is then coated with a caustic black resin extracted from boiled cashew kernels. And it lasts for generations. The kettuvallam is motorised and is steered in deep waters by means of oars. Long bamboo poles or 'punts' are used to propel in shallow areas. Bamboo beams sprouting off on the sides are used as footholds for the same. Bamboo is used for the framework of the roof and splits of bamboo are used for weaving mat for roofing.

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Wikipedia