CHALMERS v. BLUE STAR LINE, LTD.
                                                                    [1968] 1 Lloyd's Rep 643
                                                                    QUEEN'S BENCH DIVISION
                                                                    Before Mr. Justice Bridge
                                                                    
Master and servant - Safe plant - Obvious danger - MacGregor hatch cover - Seaman's thumb trapped - Liability of employers - Onus of proof - Contributory negligence.