Cummins Hotips#818                                    August 2017

At work on the river.

Most visitors to Bangkok will experience a ride on the Chao Phraya Express boats. These long, sleek, wooden, commuter boats, with their dramatically raked bows, are a staple of the river’s traffic. They can also be very crowded and, with many stops, a bit of a challenge to the tourist. A popular alternative is the tourist boats. These vessels have a more limited route and series of stops, all of which are near important tourist destinations such as the Grand Palace and Wat Arun, the Temple of the Dawn.

Power is a pair of Cummins NTA855 engines, 350 HP each for 12-knot cruising speed. Seating for 96 passengers. Gear ZF 3208 with 2:1 reduction

Recently, the owners have introduced two new tourist boats, CTB 1 and CTB 2, that will dramatically enhance the riverine experience. With a 29.6-meter length and a 4.9-meter beam, they are wider than some commuter Express Boats with similar length but as little as 2.7-meter on the beam. The new tourist boats includes a top deck seating area as well as a top mounted wheelhouse. This gives them a total seating capacity of 96 passengers and an excellent vantage for viewing the riverside scenery.

The upper passenger deck.

Most of the Express boats have only a single engine, while the new Tourist boats are twin-engined. A pair of classic Cummins NTA855 diesels is fitted into the hull under the port and starboard platforms that support the stairs to the upper decks. The engines, each rated for 350 HP at 1800 RPM, turn propellers through ZF gears with 2:1 reduction to give the boat a top speed of 12 knots.

Good visibility from the wheelhouse.

The hulls, built further up the river from Bangkok by B.P. Center 1995 Co. Ltd and S.T.P. Consultant and Acency Co Ltd., are, like the Express boats, planked in Takien with frames sawn from Teng hardwood. Takien is a popular wood for hull planking with similar strength and rot resistance to teak but it is usually painted as it doesn’t take a bright finish so well as teak.

For first-time visitors to Bangkok or those wanting to enjoy an inexpensive and leisurely cruise through the city, the new boats, like their sisters, will offer an exciting option.

Pictures courtesy of Haig-Brown/Cummins and the Chao Phraya Express Co.

For further information:


Ekachai Virunrattanasiri

Shipyard Manager,

Chao Phrya Express Boat Co. Ltd

00 Moo 3 Bang Si Mueang,

Mueang Nonthaburi, Nonthaburi 11000


Phone: 08 9133 7689




Sathit Suwanprasert
Senior Engineer, Marketing Dept.
Cummins DKSH (Thailand) Limited

Phone. 66 23017500 ext. 7540

Mobile: 081-913-6599

Fax : 02-3330995



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