Boskalis’ semi-submersible heavy-lift vessel Boka Vanguard is transporting the bulk carrier HUA SI YUAN from Abidjan, according to a vessel tracking service. The tracking data shows Boka Vanguard departed the loading location on 31 December 2025 with an estimated arrival in Singapore on 06 February 2026. It has not been confirmed whether Singapore is the final destination.
Delivered in 2013, Boka Vanguard is described as the world’s largest semi-submersible heavy-lift ship by a wide margin. The vessel is rated at 115,000 dwt and measures 274.3 m in length, positioning it to transport some of the largest offshore rigs and floating production platforms. During loading operations at maximum submergence, the vessel’s keel can sit more than 30.5 m beneath the surface, which—on a temporary basis—has been cited as making it the deepest-draft merchant ship ever built.
The cargo, HUA SI YUAN (IMO: 9497581), is a bulk carrier sailing under the flag of China. The ship has a length overall of 229 m and a beam of 32.3 m.
