RApport 2400 Tug for E.N. Bisso & Son Inc.

October 31, 2019

In August 2019, Eastern Shipbuilding Group Inc. launched the RApport 2400 tug C.D. White, a ship-assist / escort tug for E.N. Bisso & Son Inc. of New Orleans LA. The C.D. White was designed by Robert Allan Ltd. and is first of two tugs being built by Eastern to the same design for E.N. Bisso. This design is very similar to the tug Gladys B, delivered in to E.N. Bisso in 2016, with some modifications in order to better accommodate E.N. Bisso operational requirements, regulatory changes and different main machinery.

The Particulars of tugboat C.D. White are:

  • Length Overall: 80’-0”
  • Beam, moulded: 38’-0”
  • Depth, moulded: 13’-2”
  • Maximum draft: 16’-10”
  • GRT (US): < 300
  • Fuel oil: 27,700 Gal
  • Diesel Exhaust Fluid: 1,660 Gal
  • Potable water: 8,800 Gal

The tug is designed and built to USCG Subchapter M and in accordance with the following class notation but will not be Classed by ABS:

✠ A1 Towing Service, Escort Tug, ✠ AMS

The expected performance of the tug is as follows:

  • Bollard pull, ahead: 62 tonnes, approx.
  • Free running speed, ahead: 12.7 knots, approx.

The vessel has been designed to the highest standards of outfitting for an operating crew of up to six. A pantry, mess, store and wet space are located on the main deck and three double berth cabins are located below deck forward.

The tug has been outfitted for safe and efficient performance of escort, ship assist, harbour towing and fire-fighting. The deck machinery comprises a Markey DEPCF-42 HS electric escort winch on the bow, spooled with 500 feet of 8” circumference HMPE line on a single drum, and a tow post with Markey CEPB-40 5 HP capstan and Washington Chain & Supply tow hook provided on the aft deck.

Main propulsion for the tug comprises of a pair of Caterpillar 3512E, EPA Tier 4 certified diesel engines, each rated 2549 bhp at 1800 rpm, and driving a Kongsberg US205 P20 FP Z-drive unit with Ø2500 mm propeller.

The electrical plant consists of two identical John Deere 4045AFM85 diesel generators, each with a power output of 99 ekW packaged by Kennedy Engine Company. The tug is fitted with an off-ship fire-fighting system with a Counterfire ES-125-400 1,500 GPM pump driven off the front PTO of one generator via a Logan clutch.

Ship-handling fenders at the bow consist of one tier of 32” OD x 16” ID cylindrical fenders at the forecastle deck level and 24”x12” M-type fenders below main deck level. The same type M fender is used at the stern and a double strake of 37” diameter tire fenders along the sheer lines of main deck. There is a single strake of 12” hollow “D” submarine fender along the hull side.

For more information on the RApport 2400 series or on any other high-performance vessel designs developed by Robert Allan Ltd., please contact design@ral.ca.