Not a problem if you are competitive and there is a global shipbuilding demand. Very different if you are not as competitive, have zero recent track record and there is a shipbuilding slump. The vast majority of those build tonnages (certainly in Germany, Italy and to a degree France) are cruise ships whose owners currently have two priorities :
1. Get out of the business.
2. Get out of the business.
Registering just to add my two penneth about the matter of Cruise ships the reason why Germany, Italy and France have an established Cruise Ship building industry is due to the integrated supply chain they have built up locally and across the EU. Cruise ship construction is semi complex and they have a network of skilled suppliers to perform specialized work - from HVAC to galley fixtures to luxury interiors. That network is well established in Germany, Italy and France, but yards that have attempted to replicate it elsewhere have often encountered challenges. Most recently Mitsubishi Heavy Industries in Japan tried but lost $2.3 billion on two vessels and promptly gave up on the idea.
To establish the necessary supply chain in the UK to start a Cruise Ship building industry especially with our mess of unsuitable small yards in inconvenient locations exacerbated by leaving the EU Single Market makes it a forlorn concept.
The UK missed the boat when it came to Cruise ships, ironically H&W with its 1970's modernised yard intended to cash in on building Suezmax tankers might have had a chance during the 1980's Cruise ship boom but who would setup the required supply chain in Northern Ireland when there were terrorist bombs going off in the streets and within the Shipyard? What Cruise line would take the risk ordering a vessel under those circumstances. H&W is now a hollow shell these days and I think they would struggle to assemble FSS from pre built sections built by Navantia let alone full local build.
On top of that when the Cruise ship market does start to warm up again the Cruise Line operators will not be looking towards the UK if they want to expand the portfolio of yards they buy their vessels from...no they will be looking to China who have recently entered the Cruise Line market and have the advantage of access to the huge Industrial mega Cities like Guangzhou and Shenzhen to replicate the integrated supply chain needed to fit out Cruise Ships in mass. CSSC's Shanghai Waigaoqiao Shipbuilding is building a 135,500 GT Vista Class Cruise ship for Carnival at a price point 20% less than what Fincantieri can offer, if the Chinese can pull off the supply chain and quality then the traditional European yards will have cause to worry!