Ship Repair & Conversion Report

Friday, July 14, 2000
Cascade General Gets Crystal Harmony Back In Sync

Subsequent to the departure of Holland America's Statendam in April, Cascade General took in Crystal Cruises' Crystal Harmony for a 10-day stopover in May. The 10-year-old ship underwent maintenance and overhaul work below its waterline, extensive interior remodeling and steel replacement for pool areas on Deck 11.

With maximization of work in mind, Cascade normally sends advanced crews to join cruise ships on their way to the yard's Portland, Ore. locale. This time though, the first mobile crew met the ship in Los Angeles, where work commenced immediately on an overhaul of one of Harmony's auxiliary boilers. A second team was then summoned to San Francisco to clean ballast tanks before undertaking structural repairs and preservation work.

easuring 790 ft. (240 m), the vessel was drydocked at Cascade's 982 ft. (299 m) Drydock four, beginning with the mechanical systems below the waterline. Sperry stabilizer fins, each weighing 27 tons were removed to a building bay for complete refurbishment, while the 1,000 kW Lips bowthrusters were taken out for complete disassembly, overhaul and testing in one of the shipyard machine shops.

Multiple layers of paint were blasted away to clean the hull down to its bare metal so that a five-coat Jotun paint system could be applied. Welding crews replaced corroded steel in several locations, and more than 50 sea valves were overhauled and inspections performed on propellers, shafting and rudders for Lloyd's Register compliance. Sri Lanka Diving Team Goes Beneath The Surface

Following the arrival of M/V Neptune Jasper at the Sri Lankan capitol and port city of Colombo, the vessel's crew spoke of a vibration that was occurring in the propeller shaft. Taking immediate action was the Colombo Engineering dive team who was summoned to examine the 20 ft. diameter prop. Using a JW Fisher DV-2 underwater camera system, the group was able to shoot an underwater video inspection that was then observed by an agent of Lloyd's Register of Shipping, who in turn discovered that one of the vessel's four propeller blades had been sheared off.

The JW Fisher camera allowed the shipping agent to perform an accurate assessment regarding the problem as well as the necessary repairs involved. Actions taken were that the propeller blade opposite the sheared propeller blade should be cut off to balance the rotation. Immediate action was necessary, as the drive shaft bearings would be severely damaged if left unrepaired.

Extensive oxy-arc underwater cutting on the required blade, which measured 97-in. with an 8-in. thickness. Working around-the-clock, the team was able to successfully complete the job despite obstacles as bad weather and underwater currents. Following this, M/V Neptune underwent sea trials where it was discovered that the vibration had been eliminated and the vessel was able to move on to its destination carrying its consignment of containers.

While the Fishers DV-2 camera is designed to used as a deep water drop camera, many commercial diving companies utilize the system as a diver-held camera.

Maritime Reporter September 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Contracts

Total CEO Killed in Moscow Runway Accident

Private jet collided with snow plow during takeoff; Total's CEO a defender of Moscow policies. Insiders Boisseau and Pouyanne long seen as potential successors.

Offshore Oil: Lamprell Completes Caspian Sea Drilling Unit

UAE-based Lamprell said that it completed construction of the second Caspian Sea jackup drilling rig, Mercury, for service in the Caspian Sea.   "I am delighted

Salamander Energy Updates on SONA Transaction

Salamander Energy said it has submitted a draft shareholder circular to the Financial Conduct Authority in relation to previously stated plans to divest of an interest in the Greater Bualuang Area.

Ship Repair & Conversion

Mitsubishi Super Skiving System

Mitsubishi Heavy Industries, Ltd. (MHI) has completed development of the "Mitsubishi Super Skiving System" for machining internal gears with high speed and outstanding precision.

Messer to Debut MetalMaster Xcel

Messer Cutting Systems said it has answered the call from manufacturers that have been demanding a faster, more accurate way of producing cut parts. Messer’s

Rolls-Royce Expands in the Canary Islands

Rolls-Royce announced it has signed a cooperation agreement with the Astican Shipyard in Las Palmas, Canary Islands that it said will enhance the service capabilities

 
 
Maritime Contracts Naval Architecture Offshore Oil Pipelines Pod Propulsion Salvage Ship Electronics Ship Repair Ship Simulators Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1675 sec (6 req/sec)