水下老旧木船螺旋桨和船舵，可见铁锈、磨损和海洋纹理，视觉细节清晰。

tage documents old wooden boat propeller and rudder seen underwater with rust, wear, and marine texture. Submerged stern details show aged vessel parts in blue water beneath a weathered fishing craft. Marine edges change constantly through waves, currents, sediment movement, reef structure, and the interaction between shallow water and exposed stone. Key visible details include underwater, propeller, rudder, wooden boat, stern, giving the file precise subject relevance.