HMS Ocean LCVP Davit Arm
IMES Ltd has team of skilled mechanical engineers whose expertise was called upon for the complete inspection and refurbishment of all eight Landing Craft Vehicle Personnel (LCVP) 32t SWL Davit Arms fitted to the Royal Navy’s Amphibious Assault Ship HMS Ocean.
The scope of work included the removal, refurbishment, repair, component part replacement, NDE and load testing of all 45 diverter sheaves, almost 200 grease pipes, 8 hydraulic latching mechanisms, 8 fall blocks, 8 arms and all ancillary equipment associated with the arms and their load path. This was all carried out whilst the vessel was undergoing a major refit period in HMNB Devonport.
The davit arms alone are 6 metres long, weigh 4 tonnes each and are constructed of a double-cranked fabricated box section with twin pivot points and a double sheave head which facilitates two 100kg mild steel sheaves. They are fixed to their double pivot points by means of stainless steel pivots pins and operate via a winch and reeved rope system through 11 x 800mm diameter diverter sheaves per pair of arms. Each and every component was removed from the vessel, stripped down to component parts, refurbished and refitted to the vessel.
This major year-long undertaking is another demonstration of IMES’ ability to manage and successfully deliver critical projects within the agreed budget and timescale.