Wednesday, 18 August 2010
Welcome everyone to the Southern part of Thailand, Phuket Island...we will travel today one hour by Long Tail Boat, acrossing Andaman Sea to Koh Hae...or in English, Coral Island...Koh Hae is a small island situated 9 km southeast of Phuket. It stretches 3 km from east to west but is only 800 metres from north to south. Apart from a fisherman's village, much of the island is clad in jungle, and has not changed much for decades.
Nevertheless, Koh Hae is a popular day trip for visitors to Phuket, because of its lovely coral reef. For that reason, Koh Hae is often called Coral Island.
The island has two stretches of long, white sandy beaches which are ideal for swimming and snorkelling. Among the tourist activities available at Koh Hae is the Underwater Seawalker, a sort of helmet that allows visitors to walk underwater.
The long-tail boat is a type of watercraft native to Southeast Asia, which uses a common automotive engine as a readily available and maintainable powerplant. A craft designed to carry passengers on a river may include a lightweight long canoe hull, up to 30 meters, and a canopy. There is much variation among these boats, and in rural areas they may be improvised from bamboo and traditional materials—the sole defining characteristic is a secondhand car or truck engine.
This engine is invariably mounted on an inboard turret-like pole which can rotate through 180 degrees, allowing steering by thrust vectoring. The propeller is mounted directly on the driveshaft with no additional gearing or transmission. Usually the engine also swivels up and down to provide a "neutral gear" where the propeller does not contact the water. The driveshaft must be extended by several meters of metal rod to properly position the propeller, giving the boat its name and distinct appearance.
Advantages to the inboard engine with a long driveshaft include keeping the engine relatively dry. Following the basic design pattern allows a variety of engines to be attached to a variety of different kinds of hulls. This flexibility simplifies construction and maintenance while sacrificing the efficiency and comfort that might be expected of a typical mass-produced product.
Cooling to the engine is provided by a shaped metal pipe strewn underneath the rear running board which is used as a rudimentary heat-exchanger. This is then coupled to the engine using rubber or plastic hoses. Clean water is then used as the coolant.