BOATS FISHING –
Stability and Trim of Fishing Vessels for Skippers & Second Hands (1967) by J.A. Hind is a foundational text covering the practical, essential principles of loading and operating fishing vessels to ensure maximum security, seakindliness, and compliance with national and international safety standards. The book, now often found in updated versions like Stability and Trim of Fishing Vessels and Other Small Ships, provides crucial guidance on managing stability for masters and mates.
Key Stability Principles for Skippers:
- Loading & Gravity: Keep weight low; adding weight high up raises the centre of gravity, reducing stability and making the vessel “tender” or top-heavy.
- Free Surface Effect: Loose water on deck or in partially filled tanks (slack tanks) drastically reduces stability, causing the vessel to feel sluggish or “hang” at the end of a roll.
- Watertight Integrity: Keep doors, hatches, and scuppers secure to avoid downflooding.
- Fishing Gear Hazard: Suspended weights act as if they are at the top of the boom or block, significantly lowering the vessel’s center of gravity and increasing capsize risk.
- Trim Management: Proper longitudinal distribution of cargo ensures efficient performance and prevents bow or stern from burying.