Painter and printmaker specialising in marine subjects, commissioned in the Royal Navy, rising to lieutenant-commander. He studied with the sea painter W L Wyllie. Showed extensively at Abbey Gallery, RA and Walker Art Gallery in Liverpool. Among prints of his pictures published by W R Deighton & Sons were HMS Victory in Portsmouth Harbour and HMS Victory Under Sail. Accuracy of detail was a characteristic of Langmaid’s work. Lived in London.