Keppel Singmarine delivers versatile support vessel

Seaways 24 Seaways 24

SEPTEMBER 22, 2016 —Seaways International recently took delivery of the infield support vessel Seaways 24 from the Keppel Singmarine shipyard in Singapore.

The versatile multifunction vessel is the latest addition to the RAmpage 5500-ZH class of Infield Support Vessel designed by Robert Allan Ltd.

Measuring 55.00 m x 15.00 m, the Seaways 24 delivers a bollard pull, ahead of 125 tonnes and bollard pull, astern of 107 tonnes

She is powered by two 3,000 kW MAK 9M25 main engines and has two Cat MTA8 Z-drives, each with two Power Take In (PTI) shaft connections turning CPP propellers of 3.4 m diameter in nozzles.

The machinery package also includes two 560 kW PTI propulsion booster/economical speed/DP operation electric motors and two main engine Power Take Off (PTO) gearboxes, two Fi-Fi pumps, and two 1,200 ekW constant speed shaft alternators, plus two 830 ekW C32 and one 350 ekW C18 ship's service gensets.

This configuration allows the following operating modes:

Diesel-mechanical mode on main engines with house electrical power supplied by shaft alternators or service gensets

Diesel-electrical mode for economical operations on propulsion electrical motors only and with house and propulsion loads on ship's service gensets

Hybrid mode for maximum bollard pull and speed on main engines and on propulsion electrical motors with electrical power supplied by service gensets

DP2 mode on main engines with house electrical power supplied by shaft alternators or service gensets

DP1 mode on propulsion electrical motors and with house and propulsion loads on ship's service gensets

DP1 mode on one main engine only with house electrical power supplied by shaft alternator or service genset

Fi-Fi 2 operation on main engines only

Robert Allan Ltd. designed the vessel to current standards for improved emissions and environmental protection, and outfitted it to the highest standards to accommodate complement of 34

Seaways 24 has the following capabilities:

  • Tanker handling and berthing (push-pull mode)
  • SBM "holdback" duties
  • Buoy maintenance
  • Anchor handling
  • Floating hose handling
  • Deck cargo carriage and transfers including open sea operations with installed offshore crane
  • Liquid cargo transfers including methanol
  • Fire-fighting with powerful Fi-Fi system with total pump capacity up to 8,200 cu.m/hour
  • ROV support operations
  • Oil recovery Standby Class 1 for recovery and storage of hydrocarbons with flashpoint below 60 °C
  • Oil spill response with dispersant system and onboard Lamor oil spill collection system
    Ocean towing
  • Standby and rescue operations with helicopter winch area, deck rescue zone, hospital, morgue, two fast rescue boats, and with facilities sufficient to accommodate 300 survivors

The ship has been built to ABS class with the following notations:

✠ A1, Offshore Support Vessel (AH, TOW, SUPPLY-HNLS, FFV1 + FFV 2, OSR-S1)
✠ DPS-2, ✠ AMS, ✠ ACCU, UWILD, Green Passport, ENVIRO+, SSR-GR B (300), BP125, BWT+, NBLES, CRC

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