USCG Engineering Safety & Environmental Protection

Shoring is cut slightly shorter than the measured length to accommodate wooden wedges. Wedges are driven in pairs from opposite sides to securely tighten the shoring against the damaged structure without binding prematurely during installation.

Damage control shoring, as outlined in the USCG Naval Engineering Manual, provides structural reinforcement to maintain the integrity of deformed bulkheads. By distributing loads through vertical and horizontal members, shoring prevents further collapse or progressive flooding, ensuring the vessel remains seaworthy while temporary repairs are conducted to restore watertight integrity.

Hydrostatic pressure in a flooded compartment increases directly with depth, governed by the formula pressure equals head height times liquid density. Consequently, maximum force and stress occur strictly along the bottom of any bulkhead.

Mitigating progressive flooding requires maintaining positive buoyancy and stability by immediately isolating breached watertight boundaries and continuously operating bilge pumps to remove incoming water from affected machinery spaces.

Tapping a bulkhead with a hammer produces a distinct solid sound through liquid-backed plating and a hollow sound through dry air-backed spaces, providing a rapid, reliable damage control method to verify internal flooding levels.

Sounding slack fuel oil tanks with a graduated sounding tape provides direct measurement data to identify unexpected fluid level discrepancies, confirming whether hull breaches have compromised tank boundaries following a grounding incident.