GWADAR, Pakistan (Reuters) - China is lavishing vast amounts of aid on a small Pakistani fishing town to win over locals and build a commercial deep-water port that the United States and India suspect may also one day serve the Chinese navy. Beijing has built a school, sent doctors and pledged about $500 million in grants for an airport, hospital, college and badly-needed water infrastructure for Gwadar, a dusty town whose harbor juts out into the Arabian Sea, overlooking some of the world s busiest oil and gas shipping lanes. The grants include $230 million for a new international airport, one of the largest such disbursements China has made abroad, according to researchers and Pakistani officials. The handouts for the Gwadar project is a departure from Beijing s usual approach in other countries. China has traditionally derided Western-style aid in favor of infrastructure projects for which it normally provides loans through Chinese state-owned commercial and development banks.  The concentration of grants is quite striking,  said Andrew Small, an author of a book on China-Pakistan relations and a Washington-based researcher at the German Marshall Fund think tank.  China largely doesn t do aid or grants, and when it has done them, they have tended to be modest.  Pakistan has welcomed the aid with open hands. However, Beijing s unusual largesse has also fueled suspicions in the United States and India that Gwadar is part of China s future geostrategic plans to challenge U.S. naval dominance.  It all suggests that Gwadar, for a lot of people in China, is not just a commercial proposition over the longer term,  Small said. The Chinese Foreign Ministry did not respond to a request for comment from Reuters. Beijing and Islamabad see Gwadar as the future jewel in the crown of the China-Pakistan Economic Corridor (CPEC), a flagship of Beijing s Belt and Road initiative to build a new  Silk Road  of land and maritime trade routes across more than 60 countries in Asia, Europe and Africa. The plan is to turn Gwadar into a trans-shipment hub and megaport to be built alongside special economic zones from which export-focused industries will ship goods worldwide. A web of energy pipelines, roads and rail links will connect Gwadar to China s western regions. Port trade is expected to grow from 1.2 million tonnes in 2018 to about 13 million tonnes by 2022, Pakistani officials say. At the harbor, three new cranes have been installed and dredging will next year deepen the port depth to 20 meters at five berths. But the challenges are stark. Gwadar has no access to drinking water, power blackouts are common and separatist insurgents threaten attacks against Chinese projects in Gwadar and the rest of Baluchistan, a mineral-rich province that is still Pakistan s poorest region. Security is tight, with Chinese and other foreign visitors driven around in convoys of soldiers and armed police. Beijing is also trying to overcome the distrust of outsiders evident in Baluchistan, where indigenous Baloch fear an influx of other ethnic groups and foreigners. Many residents say the pace of change is too slow.  Local people are not completely satisfied,  said Essar Nori, a lawmaker for Gwadar, adding that the separatists were tapping into that dissatisfaction. Pakistani officials are urging Gwadar residents to be patient, vowing to urgently build desalination plants and power stations. China s Gwadar project contrasts with similar efforts in Sri Lanka, where the village of Hambantota was transformed into a port complex - but was saddled with Chinese debt. Last week, Sri Lanka formally handed over operations to China on a 99-year lease in exchange for lighter debt repayments, a move that sparked street protests over what many Sri Lankans view as an erosion of sovereignty. The Hambantota port, like Gwadar, is part of a network of harbors Beijing is developing in Asia and Africa that have spooked India, which fears being encircled by China s growing naval power. But Pakistani officials say comparisons to Hambantota are unfair because the Gwadar project has much less debt. On top of the airport, Chinese handouts in Gwadar include $100 million to expand a hospital by 250 beds, $130 million towards upgrading water infrastructure, and $10 million for a technical and vocational college, according to Pakistani government documents and officials.  We welcome this assistance as it s changing the quality of life of the people of Gwadar for the better,  said Senator Mushahid Hussain Sayed, chairman of the parliamentary committee that oversees CPEC, including Gwadar. China and Pakistan jointly choose which projects will be developed under the CPEC mechanism, Sayed added. When China suggested a 7,000 meter runway for the new airport, Pakistan pushed for a 12,000 meter one that could accommodate planes as large as the Airbus 380 and be used for military purposes, according to Sajjad Baloch, a director of the Gwadar Development Authority. The scale of Chinese grants is extraordinary, according to Brad Parks, executive director of AidData, a research lab at the U.S.-based William and Mary university that collected data on Chinese aid across 140 countries from 2000-2014. Since 2014, Beijing has pledged over $800 million in grants and concessional loans for Gwadar, which has less than 100,000 people. In the 15 years before that, China gave about $2.4 billion in concessional loans and grants during this period across the whole of Pakistan, a nation of 207 million people.  Gwadar is exceptional even by the standards of China s past activities in Pakistan itself,  Parks said. There are early signs China s efforts to win hearts and minds are beginning to bear fruit in Gwadar.  Baluchistan is backward and underdeveloped, but we are seeing development after China s arrival,  said Salam Dashti, 45, a grocer whose two children attend the new Chinese-built primary school. But there are major pitfalls ahead. Tens of thousands of people living by the port will have to be relocated. For now, they live in cramped single-story concrete houses corroded by sea water on a narrow peninsula, where barefoot fishermen offload their catch on newly-paved roads strewn with rubbish. Many of the fishermen say they fear they ll lose their livelihoods once the port starts operating. Indigenous residents  fear of becoming a minority is inevitable with Gwadar s population expected to jump more than 15-fold in coming decades. On the edge of town, mansions erected by land speculators are popping up alongside the sand dunes. Analysts say China is aware that previous efforts to develop Gwadar port failed partly due to the security threat posed by Baloch separatists, so Beijing is trying to counter the insurgents  narrative that China wants to exploit Baluchistan.  That weighs heavily on the minds of the Chinese,  Parks added.  It s almost certainly true that they are trying to safeguard their investments by getting more local buy-in.  Chinese officials, meanwhile, are promoting the infrastructure development they are funding.  Every day you can see new changes. It shows the sincerity of Chinese for development of Gwadar,  Lijian Zhao, the deputy chief of mission at the Chinese embassy in Islamabad, tweeted last month. For its investment in Gwadar, China will receive 91 percent of revenues until the port is returned to Pakistan in four decades  time. The operator, China Overseas Ports Holding Company, will also be exempt from major taxes for more than 20 years. Pakistan s maritime affairs minister, Hasil Bizenjo, said the arrival of the Chinese in the region contrasted with the experience of the past two centuries, when Russia and Britain, and later the United States and the Soviet Union, vied for control of the warm water ports of the Persian Gulf.  The Chinese have come very smoothly, they have reached the warm waters,  Bizenjo told Reuters.  What they are investing is less than a peanut for access to warm waters.  When a U.S. Pentagon report in June suggested Gwadar could become a military base for China, a concern that India has also expressed, Beijing dismissed the idea.  Talk that China is building a military base in Pakistan is pure guesswork,  said a Chinese Defence Ministry spokesman, Wu Qian.  Bizenjo and other Pakistani officials say Beijing has not asked to use Gwadar for naval purposes.  This port, they will use it mostly for their commercial interests, but it depends on the next 20 years where the world goes,  Bizenjo said. (This story  has been refiled to correct typos in spellings of names of Chinese officials in paragraphs 40, 46) 