源代码
Political preferences clash with warship building realities as Trump pushes costly Ford class carrier revamp: experts_我的网站
一 |
The Washington Post reported on Saturday that the US Navy is considering a major redesign of its new Ford-class aircraft carriers to better match Trump's preferred aesthetic, with the president favoring ships that more closely resemble US carriers from the World War II era. One option under study would move the carrier's island farther forward, toward the middle of the ship.
US officials cited by the report warned that such a change could require billions of dollars in redesign costs and cause substantial delays.
The potential island redesign comes only days after Trump ordered another far-reaching change to the Ford-class program. On Thursday, he signed a national security memorandum directing the Pentagon and Navy to develop a plan within 60 days to replace the Electromagnetic Aircraft Launch System (EMALS) with steam catapults and the Ford-class carriers' Advanced Weapons Elevators with hydraulic systems, beginning with the future USS Doris Miller, or CVN-81, USNI News reported.
Trump has repeatedly criticized EMALS as "too complex" and "not as effective as steam catapults," according to Reuters.
But the order would reverse a technology path the US Navy has pursued for more than a decade. When the Navy selected EMALS in 2009, it said the system would lower overall lifecycle costs, require less maintenance than steam catapults and place less physical stress on carrier-based aircraft, per Reuters.
As of March 2026, the USS Gerald R. Ford had conducted 36,863 EMALS launches, according to Pentagon documents cited by Reuters.
General Atomics, the manufacturer of EMALS, has warned against changing course on the Doris Miller, saying nearly 50 percent of production related to the system has already been completed and that a switch now would create significant cost, schedule and integration risks, according to Reuters.
Zhang Junshe, a Chinese military affairs expert, told the Global Times on Sunday that the Ford-class carrier's aft-positioned island is not merely an aesthetic choice, but is closely tied to flight-deck efficiency and landing safety. "Moving the island farther aft creates more space around the catapults for aircraft parking and handling, helping shorten launch preparation time, while also reducing airflow disturbance during aircraft recovery," he said.
Relocating the island forward would not be a simple cosmetic adjustment, but a major redesign affecting weight distribution, buoyancy, flight-deck layout and aerodynamics, with significant implications for both cost and schedule, Zhang noted.
Song Zhongping, another Chinese military affairs expert, told the Global Times that Trump's demand is one thing, but turning it into an actual warship design is another.
"The first four Ford-class carriers have either entered service or are already in different stages of construction, leaving very little room for fundamental changes to their overall designs," Song said. Even the fifth and sixth ships - the future USS William J. Clinton, CVN-82, and USS George W. Bush, CVN-83 - would face considerable cost and engineering consequences if the Navy attempts to overturn their established technological architecture, he said.
The US Navy officially announced the names of CVN-82 and CVN-83 in January 2025, per the US Navy official website.
"There is an obvious gap between US President's political will and the engineering realities of aircraft-carrier construction," Song said.
Such proposed changes come as Ford-class construction timelines have already grown considerably compared with those of the preceding Nimitz class. The US Congressional Budget Office (CBO) said in April that Nimitz-class carriers typically took seven to eight years to build, while Ford-class ships are currently taking roughly 10 to 11 years. In a separate assessment released this month, the CBO estimated that future Ford-class carriers under the Navy's 2027 shipbuilding plan could cost about $22 billion apiece.
"Electromagnetic launch represents an advanced direction in aircraft-carrier catapult technology and has far greater development potential than traditional steam catapults," Song said. "If the US gives up electromagnetic catapults and returns to steam catapults, that would be a technological regression and a step backward."
Echoing Song, Zhang said electromagnetic catapults offer more precise control of launch energy and broader compatibility with different types of carrier-based aircraft, while requiring less shipboard space than steam systems with their extensive high-pressure piping.
"Replacing EMALS with steam catapults on a Ford-class carrier already designed around electromagnetic launch would not only represent a technological step backward, but could also turn an attempt to reduce risk into a new source of engineering and system-integration risk," Zhang said.
。
原标题：海关出台18条措施 支持前海全面深化改革开放羊城晚报讯 记者李艺戈、通讯员张弓报道：日前，在《全面深化前海深港现代服务业合作区改革开放方案》发布一周年之际，海关总署发布18条措施，支持前海深港现代服务业合作区全面深化改革开放，在深港规则对接、跨境要素便捷流动、建设深港现代服务业综合保税区等三方面，全力支持深港现代服务业合作区打造粤港澳大湾区全面深化改革创新试验平台，建设高水平对外开放门户枢纽，为前海发展再次注入新动能。深圳海关相关负责人介绍，深圳海关将全力落实海关总署出台的支持措施，多渠道多方式加强政策宣传解读，帮助企业用好用足18条措施，充分释放政策红利，支持前海深港现代服务业合作区全面深化改革开放，为促进香港经济社会发展、提升粤港澳合作水平、构建对外开放新格局贡献海关力量。据了解，为推动深港融合发展，海关将在前海深港现代服务业合作区践行“智慧海关、智能边境、智享联通”理念，试点建设跨境贸易大数据平台、深港“一单两报”、支持中新（深圳）跨境贸易数据国际互联互通项目，推动实现跨境数据互联、单证互认、监管互助。
。
二 | 同时，发挥前海先行先试优势，聚焦深港规则对接，开展深港两地规则制度“软联通”合作，共商共建两地工作沟通机制，推进深港两地监管规则和检测标准的衔接，试点“一次检测、一次认证、一体通行”。
三 | 在不断推动传统货物跨境贸易便利化的同时，此次措施结合前海特点，进一步在会展业发展、科研材料通关、跨境人员便利等方面发力，更加充分发挥前海现代服务业的优势。
四 | 比如，为助力前海国际会展产业发展，海关将支持深港澳会展业“一展三地”联动，优化参展出入境及展品通关便利措施，打造数字化、智能化、便利化、集约化的展会全流程监管模式。此外，前海综合保税区作为前海重要的产业聚集地，海关将支持建设具有深港现代服务业特色的综合保税区，推动区域功能向全球供应链管理服务型、贸易结算型、资源配置型转型。支持建设电子元器件和集成电路国际交易中心、打造免税品集散中心等，为前海产业集聚打造新模式提供新动能。返回搜狐，查看更多责任编辑：
Current article:http://s3iv3s7.shengyaodanrongchui.buzz/d31xjmp/2hnavd.html
Published on:12:37:44
