Port congestion charge，或Port congestion surcharge，指的是“疏港费”。

Port congestion（港口拥堵）: the term used to describe the event of a number of vessels waiting outside a port causing the above-mentioned “traffic” at sea. It is also usually associated with the times these vessels have to wait for at both ports or anchorages.

疏港费，是一种由港口或航运公司向船东收取的费用，以弥补因港口过度拥挤引发的物流滞留、堆积等问题而产出的额外成本。疏港费通常是由船运公司在港口拥堵时，向船东和货主额外收取的一种费用，以抵消由于延迟导致的额外成本，如船舶的停泊时间延长，场内堆场的租用费用增加等。这些费用通常不包含在运输费用之内，而是在港口通知中单独列明的。

参考双语例句：

The Government always gives this explanation, saying that electronic road pricing or a congestion charge cannot be introduced in Hong Kong because we have no substitute roads.

政府常常解释说，我们不可能推行电子道路收费或挤塞费， 因为 我们没有替代的道路。

Various actions and programmes had been initiated, such as (a) a congestion fee charging system, (b) a car-sharing system; (c) Eco-drive; (d) a green transport promotion zone; (e) transit-oriented development (TOD) of railway station areas; (f) green transport modes; and (g) a bus rapid transit system in metropolitan cities.

所实施的各项措施和方案包括：(a)一个拥挤费收取系统；(b)一个拼车系统；(c)以保护生态的方式驾驶车辆；(d)一个推动实现绿色交通运输的地带；(e)在发展火车站区时着眼于过境方面的需要；(f)建立各种绿色交通运输模式；(g)一个大都市公交快捷转车系统。

The Advisory Committee was informed, upon enquiry, that the delays experienced in the planned construction of the 19 county support bases had been due to congestion in the Port of Mombasa, which affected the delivery of necessary goods to the Mission; delays in the release of containers from UNAMID by government authorities; delays with local authorities in arriving at agreements for the use of land; and the lack of available goods and services in the Mission area.

经询问，行预咨委会获悉，19个县支助基地的规划建筑项目出现拖延，是因为蒙巴萨港口拥塞，影响了向特派团提供必要的货物；政府当局批准放行来自达尔富尔混合行动的集装箱出现拖延；与地方当局达成土地使用协议出现的拖延；任务区缺乏可用的商品和服务。