Divers Replace USS Taylor CPP Hub, Avoid Dry-Docking

Posted by George Backwell
Tuesday, May 06, 2014
USS Taylor: USN photo

The Controllable Pitch Propeller (CPP) Hub of the 'USS Taylor' (FFG 50) was replaced underwater in Souda Bay, Greece, the warship having earlier suffered significant damage to its propeller blades while underway in the Black Sea, apprises Norfolk Ship Support Activity (NSSA).

"NSSA RMC Quality Assurance (QA) Department dispatched Non-Destructive Testing (NDT) technicians overseas to perform an NDT examination of the Main Reduction Gear, to assess its capabilities after the sustaining damages," said NSSA Hydraulics and Ship's Controls Branch Head Richard Krewinghaus.


Inspections of the CPP system by NSSA's Hydraulics and Ship's Controls Branch in conjunction with NSSA's QA Department and Steam and Main Propulsion Branch, indicated that the damage was isolated to the CPP hub and propeller blades.

"Underwater replacement of the hub created several unforeseen challenges, which our guys had to overcome on the fly. It was a tremendous learning experience," said Krewinghaus.

NSSA, working with NAVSEA and the original equipment manufacturer, were given guidance during removal of the damaged hub and installation of the replacement hub. 

NSSA's dive locker also provided assistance, logging 221 dives (equating to more than 41,000 minutes of bottom time assessments and repairs).


"NAVSEA provided our team with guidance and procedures on the hub change out via their engineering technicians and we performed the work as quickly as we could," said NSSA Master Diver Kelly Polk. "We went out there to solve a problem, got in the middle of the job and we were able to complete it. This repair hopefully set the standard for completing waterborne hub repairs."



To aid in a quicker repair, assets were removed from a decommissioned FFG and transported to NSSA headquarters in Norfolk where they were disassembled, repaired, cleaned and packed for shipping.

"Within one hour of the valves' arrival in Souda Bay, they were installed and the system was adjusted and operating properly. This allowed the pier side portion of testing to be completed that night and the ship was then prepared for underway testing," said Krewinghaus.



Taylor made all required preparations to get underway in parallel with the repair effort. Underway testing included a full power run with a hull vibration survey, and an emergency crash back - all of which the ship successfully completed - thereby ensuring she was fully capable of resuming her mission in support of the U.S. 6th Fleet.



People & Company News

MN100: MOPS Marine License Insurance

The Company: Since 1935, MOPS Marine License Insurance has defended the USCG licenses of mariners operating in every maritime sector in the United States. Its network of over 80 maritime law firms,

China Cosco Sinks into Red

Dragged by lackluster freight rates in the maritime transport market during the first half of 2016, China Cosco Holdings logged a 7.2 billion yuan ($1.07 billion) net loss for the January-June half,

DNV GL Backs John Laing on First Offshore Wind Investment

DNV GL successfully completed its due diligence work of the offshore wind farm “Nordergründe” in the North Sea, reviewing and quantifying the technical risks of the project.

Ship Repair & Conversion

California: A Strong Shipbuilding State

Fifth in the nation for direct employment, California shipbuilding and repair industry supports nearly 35,000 jobs; Maritime Administrator highlights economic importance

Damen, Evoqua Team for Innovative BWTS Solution

Two innovators in delivering unique solutions for the maritime sector, Damen Green Solutions and Evoqua Water Technologies will launch the DAMEN BALCON EC 1500

MN100: Conrad Shipyard

The Company: Conrad Shipyard was established in 1948 and is headquartered in Morgan City, Louisiana. The company designs, builds and overhauls tugboats, ferries,

Navy

This Day In Naval History: August 29

1861 - During the Civil War, Seaman Benjamin Swearer lands with troops from the steam sloop of war, Pawnee, and takes part in the capture of Fort Clark, at Hatteras Inlet, N.

USS Freedom Suffers Casualty

The U.S. Navy's first littoral combat ship USS Freedom (LCS 1) experienced a casualty to one of its main propulsion diesel engines (MPDE) on July 11 reportedly

Michelle Obama Sponsors Attack Submarine

General Dynamics Electric Boat has delivered to the U.S. Navy an attack submarine that is sponsored by first lady Michelle Obama and will be named for her home state, reports AP.

Underwater Engineering

Esvagt Makes Vestdavit MissionEase First Choice for Mission Bay

Norway-based boat system and davit-handling specialist Vestdavit has secured a breakthrough order for its unique MissionEase multi-boat handling solution for mission Bays,

Fugro, US Army Corps of Engineers Ink Mapping Deal

Fugro has been awarded a photogrammetric and LIDAR surveying and mapping contract by the U.S. Army Corps of Engineers, St. Louis District, Missouri. The agreement

 
 
Maritime Careers / Shipboard Positions Maritime Security Navigation Offshore Oil Pipelines Pod Propulsion Salvage Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | 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: 0.1330 sec (8 req/sec)